Deployment with capistrano - Rake Task fails

[ck2000]

I am trying to deploy using the asset pipeline. I am receiving the following message:

Tasks: TOP => deploy:assets:precompile
(See full trace by running task with --trace)
The deploy has failed with an error: Exception while executing as xxxx : rake exit status: 1
rake aborted!
NoMethodError: undefined method []' for nil:NilClass [...]/shared/bundle/ruby/2.6.0/gems/critical-path-css-rails-4.0.1/lib/critical_path_css/rails/config_loader.rb:36:in validate_css_paths'
[...]/shared/bundle/ruby/2.6.0/gems/critical-path-css-rails-4.0.1/lib/critical_path_css/rails/config_loader.rb:7:in initialize' [...]/shared/bundle/ruby/2.6.0/gems/critical-path-css-rails-4.0.1/lib/critical-path-css-rails.rb:35:in new'
[...]/shared/bundle/ruby/2.6.0/gems/critical-path-css-rails-4.0.1/lib/critical-path-css-rails.rb:35:in config_loader' [...]/shared/bundle/ruby/2.6.0/gems/critical-path-css-rails-4.0.1/lib/critical-path-css-rails.rb:31:in fetcher'
[...]/shared/bundle/ruby/2.6.0/gems/critical-path-css-rails-4.0.1/lib/critical-path-css-rails.rb:13:in generate_all' [...]/releases/20190823144812/lib/tasks/critical_path_css.rake:6:in block (2 levels) in <top (required)>'
[...]/releases/20190823144812/lib/tasks/critical_path_css.rake:18:in block in <top (required)>' [...]/shared/bundle/ruby/2.6.0/gems/rake-12.3.3/exe/rake:27:in <top (required)>'
[...]shared/bundle/ruby/2.6.0/bin/ruby_executable_hooks:24:in eval' [...]/shared/bundle/ruby/2.6.0/bin/ruby_executable_hooks:24:in

'

What am I doing wrong? Iam using ruby 2.6.3 and rails 5.2.3

[michael-misshore]

@ck2000 I'm pretty sure we don't have a test case for manifest_name, which is what you are using. I think the OP fixed this in his fork, but I'll need to write a test for this, duplicate the error, and then push the fix.

[ck2000]

Okay, please let me know if I can give you a helping hand. Having this fixed in the master branch makes sense.