Missing gem even though I've installed it

I’m trying to run bundle exec jekyll serve in Terminal and when I do, I receive this.

Could not find gem 'autoprefixer-rails' in any of the gem sources listed in your Gemfile.

Run `bundle install` to install missing gems.

So I run gem install autoprefixer-rails

and I get

Successfully installed autoprefixer-rails-9.7.4

Parsing documentation for autoprefixer-rails-9.7.4

Done installing documentation for autoprefixer-rails after 0 seconds

1 gem installed

and I run bundle exec jekyll serve again, and I run into the same message as before.

Help anyone?

The message is asking you to run bundle install not gem install ...

Here’s a screenshot. Might be more useful.

Interesting. Bundler is not able to install fresh native extensions.
What is the output when you run bundle config path?

Edit: Nevermid that. I think the problem is that your directory path contains a space:
/Google Drive/. Try renaming the directory to GoogleDrive or Google_Drive

Then rename 003 Faculty to something without the space…

Tried that. No luck still.

Yes, that’s because 003 Faculty has a space too…

Did you try renaming 003 Faculty to something without the space…?

Yeah, that seemed to work. Weird… It was never an issue before? Does it have something to do with the new MacOs update?

So I ran bundle exec jekyll serve and it seems to be running now, minus all the errors appearing.

Christians-MacBook-Pro:000F-Website christians$ bundle exec jekyll serve
Configuration file: /Users/christians/google-drive/003-faculty/000F-Website/_config.yml
            Source: /Users/christians/google-drive/003-faculty/000F-Website
       Destination: /Users/christians/google-drive/003-faculty/000F-Website/_site
 Incremental build: disabled. Enable with --incremental
      Generating... 
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/convertible.rb:41: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/convertible.rb:41: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/convertible.rb:41: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/convertible.rb:41: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/convertible.rb:41: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/convertible.rb:41: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/convertible.rb:41: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/document.rb:466: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/document.rb:432: warning: Passing the keyword argument as the last hash parameter is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/document.rb:75: warning: The called method `merge_data!' is defined here
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/document.rb:439: warning: Passing the keyword argument as the last hash parameter is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/document.rb:75: warning: The called method `merge_data!' is defined here
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/document.rb:466: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/document.rb:466: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/document.rb:466: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/document.rb:466: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/document.rb:466: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/convertible.rb:41: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/convertible.rb:41: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/convertible.rb:41: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/convertible.rb:41: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/convertible.rb:41: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/convertible.rb:41: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/convertible.rb:41: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/document.rb:466: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/document.rb:466: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/document.rb:466: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/document.rb:466: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/document.rb:466: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/convertible.rb:41: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/convertible.rb:41: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/convertible.rb:41: warning: Using the last argument as keyword parameters is deprecated
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/convertible.rb:41: warning: Using the last argument as keyword parameters is deprecated
  Liquid Exception: Liquid syntax error (line 1): Unknown tag 'img' in /Users/christians/google-drive/003-faculty/000F-Website/_posts/2019-06-01-visual-poetry.md
                    ------------------------------------------------
      Jekyll 4.0.0   Please append `--trace` to the `serve` command 
                     for any additional information or backtrace. 
                    ------------------------------------------------
Traceback (most recent call last):
	50: from /usr/local/opt/ruby/bin/bundle:23:in `<main>'
	49: from /usr/local/opt/ruby/bin/bundle:23:in `load'
	48: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/exe/bundle:34:in `<top (required)>'
	47: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/friendly_errors.rb:123:in `with_friendly_errors'
	46: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/exe/bundle:46:in `block in <top (required)>'
	45: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/cli.rb:24:in `start'
	44: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/vendor/thor/lib/thor/base.rb:476:in `start'
	43: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/cli.rb:30:in `dispatch'
	42: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/vendor/thor/lib/thor.rb:399:in `dispatch'
	41: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/vendor/thor/lib/thor/invocation.rb:127:in `invoke_command'
	40: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
	39: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/cli.rb:476:in `exec'
	38: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/cli/exec.rb:28:in `run'
	37: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/cli/exec.rb:63:in `kernel_load'
	36: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/cli/exec.rb:63:in `load'
	35: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bin/jekyll:23:in `<top (required)>'
	34: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bin/jekyll:23:in `load'
	33: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/exe/jekyll:15:in `<top (required)>'
	32: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/mercenary-0.3.6/lib/mercenary.rb:19:in `program'
	31: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/mercenary-0.3.6/lib/mercenary/program.rb:42:in `go'
	30: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/mercenary-0.3.6/lib/mercenary/command.rb:220:in `execute'
	29: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/mercenary-0.3.6/lib/mercenary/command.rb:220:in `each'
	28: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/mercenary-0.3.6/lib/mercenary/command.rb:220:in `block in execute'
	27: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/commands/serve.rb:86:in `block (2 levels) in init_with_program'
	26: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/command.rb:89:in `process_with_graceful_fail'
	25: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/command.rb:89:in `each'
	24: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/command.rb:89:in `block in process_with_graceful_fail'
	23: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/commands/build.rb:36:in `process'
	22: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/commands/build.rb:65:in `build'
	21: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/command.rb:28:in `process_site'
	20: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/site.rb:76:in `process'
	19: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/site.rb:201:in `render'
	18: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/site.rb:507:in `render_docs'
	17: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/site.rb:507:in `each_value'
	16: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/site.rb:508:in `block in render_docs'
	15: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/site.rb:508:in `each'
	14: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/site.rb:509:in `block (2 levels) in render_docs'
	13: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/site.rb:523:in `render_regenerated'
	12: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/renderer.rb:63:in `run'
	11: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/renderer.rb:80:in `render_document'
	10: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/renderer.rb:122:in `render_liquid'
	 9: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/liquid_renderer/file.rb:12:in `parse'
	 8: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/liquid_renderer/file.rb:60:in `measure_time'
	 7: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/jekyll-4.0.0/lib/jekyll/liquid_renderer/file.rb:13:in `block in parse'
	 6: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/liquid-4.0.3/lib/liquid/template.rb:116:in `parse'
	 5: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/liquid-4.0.3/lib/liquid/template.rb:132:in `parse'
	 4: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/liquid-4.0.3/lib/liquid/document.rb:5:in `parse'
	 3: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/liquid-4.0.3/lib/liquid/document.rb:10:in `parse'
	 2: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/liquid-4.0.3/lib/liquid/block_body.rb:32:in `parse'
	 1: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/liquid-4.0.3/lib/liquid/document.rb:11:in `block in parse'
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/liquid-4.0.3/lib/liquid/document.rb:23:in `unknown_tag': Liquid syntax error (line 1): Unknown tag 'img' (Liquid::SyntaxError)

Can’t say for certain if its the macOS update. It was always noted that installing native extensions in a path containing spaces can lead to bugs… :man_shrugging:

Regarding the current load of warnings you see…, it is explicitly because of Ruby 2.7.0.
They will go way when Jekyll releases v4.1… Until then you can edit your Gemfile to point to the Jekyll GitHub repository if you want…

How can I edit my Gemfile to do that?

Sorry for all the questions. Jekyll has always run so smoothly.

Edit your Gemfile so that it looks like the following:

gem 'jekyll', github: 'jekyll/jekyll'

This is what is currently in my Gemfile. Which should I replace?

Line 5:

gem "jekyll"

to

gem 'jekyll', github: 'jekyll/jekyll'

Alright so I did that and ran

Christians-MacBook-Pro:000F-Website christians$ bundle exec jekyll serve

The git source https://github.com/jekyll/jekyll.git is not yet checked out. Please run `bundle install` before trying to start your application

Christians-MacBook-Pro:000F-Website christians$ bundle install
Fetching https://github.com/jekyll/jekyll.git
Fetching gem metadata from https://rubygems.org/..........
Fetching gem metadata from https://rubygems.org/.
Resolving dependencies...
Bundler could not find compatible versions for gem "mercenary":
  In snapshot (Gemfile.lock):
    mercenary (= 0.3.6)

  In Gemfile:
    html-proofer was resolved to 3.15.1, which depends on
      mercenary (~> 0.3)

    jekyll-sitemap was resolved to 1.4.0, which depends on
      jekyll (>= 3.7, < 5.0) was resolved to 4.0.0, which depends on
        mercenary (~> 0.4.0)

Running `bundle update` will rebuild your snapshot from scratch, using only
the gems in your Gemfile, which may resolve the conflict.

so I ran bundle update, which worked successfully and now when I run bundle exec jekyll serve again, I receive this:

Christians-MacBook-Pro:000F-Website christians$ bundle exec jekyll serve
Configuration file: /Users/christians/google-drive/003-faculty/000F-Website/_config.yml
            Source: /Users/christians/google-drive/003-faculty/000F-Website
       Destination: /Users/christians/google-drive/003-faculty/000F-Website/_site
 Incremental build: disabled. Enable with --incremental
      Generating... 
  Liquid Exception: Liquid syntax error (line 1): Unknown tag 'img' in /Users/christians/google-drive/003-faculty/000F-Website/_posts/2019-06-01-visual-poetry.md
                    ------------------------------------------------
      Jekyll 4.0.0   Please append `--trace` to the `serve` command 
                     for any additional information or backtrace. 
                    ------------------------------------------------
Traceback (most recent call last):
	50: from /usr/local/opt/ruby/bin/bundle:23:in `<main>'
	49: from /usr/local/opt/ruby/bin/bundle:23:in `load'
	48: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/exe/bundle:34:in `<top (required)>'
	47: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/friendly_errors.rb:123:in `with_friendly_errors'
	46: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/exe/bundle:46:in `block in <top (required)>'
	45: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/cli.rb:24:in `start'
	44: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/vendor/thor/lib/thor/base.rb:476:in `start'
	43: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/cli.rb:30:in `dispatch'
	42: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/vendor/thor/lib/thor.rb:399:in `dispatch'
	41: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/vendor/thor/lib/thor/invocation.rb:127:in `invoke_command'
	40: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
	39: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/cli.rb:476:in `exec'
	38: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/cli/exec.rb:28:in `run'
	37: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/cli/exec.rb:63:in `kernel_load'
	36: from /Users/christians/.gem/ruby/2.7.0/gems/bundler-2.1.4/lib/bundler/cli/exec.rb:63:in `load'
	35: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bin/jekyll:23:in `<top (required)>'
	34: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bin/jekyll:23:in `load'
	33: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/exe/jekyll:15:in `<top (required)>'
	32: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/mercenary-0.4.0/lib/mercenary.rb:21:in `program'
	31: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/mercenary-0.4.0/lib/mercenary/program.rb:44:in `go'
	30: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `execute'
	29: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `each'
	28: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `block in execute'
	27: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/commands/serve.rb:86:in `block (2 levels) in init_with_program'
	26: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/command.rb:91:in `process_with_graceful_fail'
	25: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/command.rb:91:in `each'
	24: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/command.rb:91:in `block in process_with_graceful_fail'
	23: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/commands/build.rb:36:in `process'
	22: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/commands/build.rb:65:in `build'
	21: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/command.rb:28:in `process_site'
	20: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/site.rb:76:in `process'
	19: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/site.rb:201:in `render'
	18: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/site.rb:507:in `render_docs'
	17: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/site.rb:507:in `each_value'
	16: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/site.rb:508:in `block in render_docs'
	15: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/site.rb:508:in `each'
	14: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/site.rb:509:in `block (2 levels) in render_docs'
	13: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/site.rb:523:in `render_regenerated'
	12: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/renderer.rb:63:in `run'
	11: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/renderer.rb:80:in `render_document'
	10: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/renderer.rb:122:in `render_liquid'
	 9: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/liquid_renderer/file.rb:12:in `parse'
	 8: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/liquid_renderer/file.rb:60:in `measure_time'
	 7: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/bundler/gems/jekyll-a1c18b6e8712/lib/jekyll/liquid_renderer/file.rb:13:in `block in parse'
	 6: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/liquid-4.0.3/lib/liquid/template.rb:116:in `parse'
	 5: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/liquid-4.0.3/lib/liquid/template.rb:132:in `parse'
	 4: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/liquid-4.0.3/lib/liquid/document.rb:5:in `parse'
	 3: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/liquid-4.0.3/lib/liquid/document.rb:10:in `parse'
	 2: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/liquid-4.0.3/lib/liquid/block_body.rb:32:in `parse'
	 1: from /Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/liquid-4.0.3/lib/liquid/document.rb:11:in `block in parse'
/Users/christians/google-drive/003-faculty/000F-Website/vendor/bundle/ruby/2.7.0/gems/liquid-4.0.3/lib/liquid/document.rb:23:in `unknown_tag': Liquid syntax error (line 1): Unknown tag 'img' (Liquid::SyntaxError)

Frustrating isn’t it?
You were probably using jekyll-assets before. But removed it for some reason… (:smiling_imp:)

The other thing is jekyll-assets has not released a Jekyll 4.0 compatible version yet. I’m not totally familiar with that project though so can’t really recommend that you try pointing your Gemfile to the plugin’s GitHub repository…

Super super frustrating.

I added jekyll-assets back in because a certain someone!! told me to remove it.

Still running into the same issue. Here’s my repository: https://github.com/christiantype/Faculty-One

So is there just nothing I can do?

If your site builds fine with Jekyll 3.8, use that instead of the jekyll master.
Yes, you’ll have those warnings. You can search the internet for tips to turn them off…

Last question. How do I use that instead of jekyll master?

If that doesn’t work. I think I’m just going to start my website from scratch.