## Jekyll issue Error: undefined method `process_with_graceful_fail' for Jekyll::Commands::Build:Class

1

Hi guys, I’m trying to make my first Jekyll page from the scratch but I am finding an annoying error which I cannot troubleshoot

jekyll build


jekyll 3.8.6 | Error:  undefined method `process_with_graceful_fail' for Jekyll::Commands::Build:Class
Traceback (most recent call last):
        8: from /usr/local/bin/jekyll:23:in `<main>'
        7: from /usr/local/bin/jekyll:23:in `load'
        6: from /var/lib/gems/2.7.0/gems/jekyll-4.1.1/exe/jekyll:15:in `<top (required)>'
        5: from /var/lib/gems/2.7.0/gems/mercenary-0.4.0/lib/mercenary.rb:21:in `program'
        4: from /var/lib/gems/2.7.0/gems/mercenary-0.4.0/lib/mercenary/program.rb:44:in `go'
        3: from /var/lib/gems/2.7.0/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `execute'
        2: from /var/lib/gems/2.7.0/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `each'
        1: from /var/lib/gems/2.7.0/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `block in execute'
/var/lib/gems/2.7.0/gems/jekyll-4.1.1/lib/jekyll/commands/build.rb:18:in `block (2 levels) in init_with_program': undefined method `process_with_graceful_fail' for Jekyll::Commands::Build:Class (NoMethodError)

I’ve seen another guy having the same problem, I’m gonna paste some of my specs to see if you can figure out what is wrong in my system
As It may be something related to PATH environment of gem or ruby

$which jekyll
/usr/local/bin/jekyll

$ which ruby
/usr/bin/ruby
$ ruby --version
ruby 2.7.0p0 (2019-12-25 revision 647ee6f091) [x86_64-linux-gnu]
$ which gem
/usr/bin/gem
$ gem --version
3.1.2
$ gem env
RubyGems Environment:
  - RUBYGEMS VERSION: 3.1.2
  - RUBY VERSION: 2.7.0 (2019-12-25 patchlevel 0) [x86_64-linux-gnu]
  - INSTALLATION DIRECTORY: /var/lib/gems/2.7.0
  - USER INSTALLATION DIRECTORY: /home/kali/.gem/ruby/2.7.0
  - RUBY EXECUTABLE: /usr/bin/ruby2.7
  - GIT EXECUTABLE: /usr/bin/git
  - EXECUTABLE DIRECTORY: /usr/local/bin
  - SPEC CACHE DIRECTORY: /home/kali/.gem/specs
  - SYSTEM CONFIGURATION DIRECTORY: /etc
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-linux
  - GEM PATHS:
     - /var/lib/gems/2.7.0
     - /home/kali/.gem/ruby/2.7.0
     - /usr/lib/ruby/gems/2.7.0
     - /usr/share/rubygems-integration/2.7.0
     - /usr/share/rubygems-integration/all
     - /usr/lib/x86_64-linux-gnu/rubygems-integration/2.7.0
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :backtrace => false
     - :bulk_threshold => 1000
  - REMOTE SOURCES:
     - https://rubygems.org/
  - SHELL PATH:
     - /home/kali/.local/bin
     - /usr/local/sbin
     - /usr/sbin
     - /sbin
     - /usr/local/bin
     - /usr/bin
     - /bin
     - /usr/local/games
     - /usr/games
     - /usr/local/go/bin
     - /home/kali/.local/bin

What would you do in my situation? Thanks!!

2

I would first try running bundle exec jekyll build because the error is pointing to Jekyll 3.8.6 but the stacktrace shows references to Jekyll 4.1.1.

Ideally it shouldn’t be a problem. But if you have Jekyll installed in different locations, the environment gets confused about the best version to choose from.