Error in Step by Step Tutorial

Thanks, I was going crazy with that. Then 4.x fails? like was described in this post, I reverted my site to 3.9.5 because I have the same error.

I have my site since 10 years, and the original theme author die, and I’m low level developer, C++, I don’t know about style sheets, but I feeling that the error maybe is with the syntax of my “variables” maybe is wrong for the last converter. It is included here

Well for now this the error:

Full exception error details
 Conversion error: Jekyll::Converters::Scss encountered an error while converting 'assets/css/styles.scss':
                    expected "{".
bundler: failed to load command: jekyll (/home/avp/gems/bin/jekyll)
Traceback (most recent call last):
	46: from /home/avp/gems/bin/bundle:23:in `<main>'
	45: from /home/avp/gems/bin/bundle:23:in `load'
	44: from /home/avp/gems/gems/bundler-2.4.22/exe/bundle:29:in `<top (required)>'
	43: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/friendly_errors.rb:117:in `with_friendly_errors'
	42: from /home/avp/gems/gems/bundler-2.4.22/exe/bundle:37:in `block in <top (required)>'
	41: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/cli.rb:28:in `start'
	40: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/vendor/thor/lib/thor/base.rb:584:in `start'
	39: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/cli.rb:34:in `dispatch'
	38: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/vendor/thor/lib/thor.rb:527:in `dispatch'
	37: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/vendor/thor/lib/thor/invocation.rb:127:in `invoke_command'
	36: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/vendor/thor/lib/thor/command.rb:28:in `run'
	35: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/cli.rb:492:in `exec'
	34: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/cli/exec.rb:23:in `run'
	33: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/cli/exec.rb:58:in `kernel_load'
	32: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/cli/exec.rb:58:in `load'
	31: from /home/avp/gems/bin/jekyll:23:in `<top (required)>'
	30: from /home/avp/gems/bin/jekyll:23:in `load'
	29: from /home/avp/gems/gems/jekyll-4.3.4/exe/jekyll:15:in `<top (required)>'
	28: from /home/avp/gems/gems/mercenary-0.4.0/lib/mercenary.rb:21:in `program'
	27: from /home/avp/gems/gems/mercenary-0.4.0/lib/mercenary/program.rb:44:in `go'
	26: from /home/avp/gems/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `execute'
	25: from /home/avp/gems/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `each'
	24: from /home/avp/gems/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `block in execute'
	23: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/commands/build.rb:18:in `block (2 levels) in init_with_program'
	22: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/command.rb:91:in `process_with_graceful_fail'
	21: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/command.rb:91:in `each'
	20: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/command.rb:91:in `block in process_with_graceful_fail'
	19: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/commands/build.rb:36:in `process'
	18: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/commands/build.rb:65:in `build'
	17: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/command.rb:28:in `process_site'
	16: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/site.rb:80:in `process'
	15: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/site.rb:211:in `render'
	14: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/site.rb:563:in `render_pages'
	13: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/site.rb:563:in `each'
	12: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/site.rb:564:in `block in render_pages'
	11: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/site.rb:572:in `render_regenerated'
	10: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/renderer.rb:63:in `run'
	 9: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/renderer.rb:84:in `render_document'
	 8: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/renderer.rb:104:in `convert'
	 7: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/renderer.rb:104:in `reduce'
	 6: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/renderer.rb:104:in `each'
	 5: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/renderer.rb:105:in `block in convert'
	 4: from /home/avp/gems/gems/jekyll-sass-converter-3.0.0/lib/jekyll/converters/scss.rb:160:in `convert'
	 3: from /home/avp/gems/gems/sass-embedded-1.63.6/lib/sass/embedded.rb:52:in `compile_string'
	 2: from /home/avp/gems/gems/sass-embedded-1.63.6/lib/sass/embedded.rb:215:in `compile_string'
	 1: from /home/avp/gems/gems/sass-embedded-1.63.6/lib/sass/embedded/host.rb:65:in `compile_request'
/home/avp/gems/gems/sass-embedded-1.63.6/lib/sass/embedded/protofier.rb:16:in `from_proto_compile_response': expected "{". (Sass::CompileError)
	43: from /home/avp/gems/bin/bundle:23:in `<main>'
	42: from /home/avp/gems/bin/bundle:23:in `load'
	41: from /home/avp/gems/gems/bundler-2.4.22/exe/bundle:29:in `<top (required)>'
	40: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/friendly_errors.rb:117:in `with_friendly_errors'
	39: from /home/avp/gems/gems/bundler-2.4.22/exe/bundle:37:in `block in <top (required)>'
	38: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/cli.rb:28:in `start'
	37: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/vendor/thor/lib/thor/base.rb:584:in `start'
	36: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/cli.rb:34:in `dispatch'
	35: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/vendor/thor/lib/thor.rb:527:in `dispatch'
	34: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/vendor/thor/lib/thor/invocation.rb:127:in `invoke_command'
	33: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/vendor/thor/lib/thor/command.rb:28:in `run'
	32: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/cli.rb:492:in `exec'
	31: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/cli/exec.rb:23:in `run'
	30: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/cli/exec.rb:58:in `kernel_load'
	29: from /home/avp/gems/gems/bundler-2.4.22/lib/bundler/cli/exec.rb:58:in `load'
	28: from /home/avp/gems/bin/jekyll:23:in `<top (required)>'
	27: from /home/avp/gems/bin/jekyll:23:in `load'
	26: from /home/avp/gems/gems/jekyll-4.3.4/exe/jekyll:15:in `<top (required)>'
	25: from /home/avp/gems/gems/mercenary-0.4.0/lib/mercenary.rb:21:in `program'
	24: from /home/avp/gems/gems/mercenary-0.4.0/lib/mercenary/program.rb:44:in `go'
	23: from /home/avp/gems/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `execute'
	22: from /home/avp/gems/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `each'
	21: from /home/avp/gems/gems/mercenary-0.4.0/lib/mercenary/command.rb:221:in `block in execute'
	20: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/commands/build.rb:18:in `block (2 levels) in init_with_program'
	19: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/command.rb:91:in `process_with_graceful_fail'
	18: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/command.rb:91:in `each'
	17: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/command.rb:91:in `block in process_with_graceful_fail'
	16: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/commands/build.rb:36:in `process'
	15: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/commands/build.rb:65:in `build'
	14: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/command.rb:28:in `process_site'
	13: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/site.rb:80:in `process'
	12: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/site.rb:211:in `render'
	11: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/site.rb:563:in `render_pages'
	10: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/site.rb:563:in `each'
	 9: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/site.rb:564:in `block in render_pages'
	 8: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/site.rb:572:in `render_regenerated'
	 7: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/renderer.rb:63:in `run'
	 6: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/renderer.rb:84:in `render_document'
	 5: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/renderer.rb:104:in `convert'
	 4: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/renderer.rb:104:in `reduce'
	 3: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/renderer.rb:104:in `each'
	 2: from /home/avp/gems/gems/jekyll-4.3.4/lib/jekyll/renderer.rb:105:in `block in convert'
	 1: from /home/avp/gems/gems/jekyll-sass-converter-3.0.0/lib/jekyll/converters/scss.rb:159:in `convert'