undefined method `stubs_for' for Gem::Specification:Class (NoMethodError) - ruby

Question

these days, I have tried to build my github blog using a minimal-mistakes theme.
at the last Quick guide there are saying
bundle exec jekyll serve
results
`find_name': undefined method `stubs_for' for Gem::Specification:Class (NoMethodError)
specific
C:\Users\all7j\Documents\project\elephantoid.github.io>bundle exec jekyll serve
Traceback (most recent call last):
21: from C:/Ruby26-x64/lib/ruby/site_ruby/2.6.0/rubygems/core_ext/kernel_require.rb:55:in `require'
20: from C:/Ruby26-x64/lib/ruby/site_ruby/2.6.0/rubygems/core_ext/kernel_require.rb:55:in `require'
19: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/setup.rb:10:in `<top (required)>'
18: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/ui/shell.rb:88:in `silence'
17: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/ui/shell.rb:136:in `with_level'
16: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/setup.rb:10:in `block in <top (required)>'
15: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler.rb:149:in `setup'
14: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/runtime.rb:20:in `setup'
13: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/runtime.rb:101:in `block in definition_method'
12: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/definition.rb:226:in `requested_specs'
11: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/definition.rb:237:in `specs_for'
10: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/definition.rb:170:in `specs'
9: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/definition.rb:258:in `resolve'
8: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/definition.rb:268:in `index'
7: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/index.rb:11:in `build'
6: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/definition.rb:271:in `block in index'
5: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/definition.rb:271:in `each'
4: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/definition.rb:273:in `block (2 levels) in index'
3: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/source/metadata.rb:7:in `specs'
2: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/index.rb:11:in `build'
1: from C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/source/metadata.rb:28:in `block in specs'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/bundler-2.1.4/lib/bundler/rubygems_integration.rb:623:in `find_name': undefined method `stubs_for' for Gem::Specification:Class (NoMethodError)
Did you mean? stubs
I can't find what the stubs_for.
and I don't know what is the problem...
I just follow the Quick guide steps.
I had install gem, ruby, bundler on windows.
and fork GitHub, update _config.yml and more things...

Answer 1

I had a similar case which was brought to me through passenger.log:
[ 2020-12-07 20:13:44.4960 18738/7f0b659e8700 agents/HelperAgent/RequestHandler.h:2306 ]: [Client 19] Cannot checkout session because a spawning error occurred. The identifier of the error is e907d6aa. Please see earlier logs for details about the error.
App 19579 stdout:
App 19579 stdout:
[ 2020-12-07 20:13:54.2571 18738/7f0b67e7c700 Pool2/Implementation.cpp:287 ]: Could not spawn process for application /data/appname/current: An error occured while starting up the preloader.
Error ID: 61ed637e
Error details saved to: /tmp/passenger-error-x96ujc.html
Message from application: undefined method `stubs_for' for Gem::Specification:Class (NoMethodError)
In my case it was a rubygems version change. Depending on your application and expected version you'd like to replace it appropriately below:
gem install -v 2.7.7 rubygems-update && gem update --system 2.7.7
You may also want to uninstall previous rubygems-update prior to re-installation:
gem uninstall rubygems-update
Select gem to uninstall:
1. rubygems-update-2.4.8
2. rubygems-update-2.6.13
3. All versions
> 3
Successfully uninstalled rubygems-update-2.4.8
Remove executables:
update_rubygems
in addition to the gem? [Yn] y
Removing update_rubygems
Successfully uninstalled rubygems-update-2.6.13
and a cleanup of the corresponding folder:
rm -f /usr/local/bin/update_rubygems
You'd like to translate those to your windows machine locations/commands