Heroku：由于NoMethodError而无法推送到heroku

我跑了git push heroic master，得到了很长的错误消息（被截断）。如果我没看错，这是问题的主要原因remote: NoMethodError: undefined method 'split' for {}:Hash。即使代码在本地计算机上运行，​​如何从终端解决此问题。如果需要更多信息，请告知我，也许在这里告诉我出了什么问题。

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remote: Compressing source files... done.
remote: Building source:
remote: 
remote:  !     Warning: Multiple default buildpacks reported the ability to handle this app. The first buildpack in the list below will be used.
remote:             Detected buildpacks: Ruby,Node.js
remote:             See https://devcenter.heroku.com/articles/buildpacks#buildpack-detect-order
remote: -----> Ruby app detected
remote: -----> Compiling Ruby/Rails
remote: -----> Using Ruby version: ruby-2.5.3
remote: 
remote: ###### WARNING:
remote: 
remote:        You have the `.bundle/config` file checked into your repositor
remote:         It contains local state like the location of the installed bundle
remote:         as well as configured git local gems, and other settings that should
remote:        not be shared between multiple checkouts of a single repo. Please
remote:        remove the `.bundle/` folder from your repo and add it to your `.gitignore` file.
remote:        https://devcenter.heroku.com/articles/bundler-configuration
remote: 
remote: -----> Installing dependencies using bundler 1.15.2
remote:        Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 --deployment
remote:        --- ERROR REPORT TEMPLATE -------------------------------------------------------
remote:        # Error Report
remote:        
remote:        ## Questions
remote:        
remote:        Please fill out answers to these questions, it'll help us figure out
remote:        why things are going wrong.
remote:        
remote:        - **What did you do?**
remote:        
remote:          I ran the command `vendor/bundle/ruby/2.5.0/bin/bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 --deployment --no-clean`
remote:        
remote:        - **What did you expect to happen?**
remote:        
remote:          I expected Bundler to...
remote:        
remote:        - **What happened instead?**
remote:        
remote:          Instead, what happened was...
remote:        
remote:        - **Have you tried any solutions posted on similar issues in our issue tracker, stack overflow, or google?**
remote:        
remote:          I tried...
remote:        
remote:        - **Have you read our issues document, https://github.com/bundler/bundler/blob/master/doc/contributing/ISSUES.md?**
remote:        
remote:          ...
remote:        
remote:        ## Backtrace
remote:        
remote:        ```
remote:        NoMethodError: undefined method `split' for {}:Hash
remote:          /tmp/build_571ced5049bd8f6d5aa742e589ae07bf/vendor/bundle/ruby/2.5.0/gems/bundler-1.15.2/lib/bundler/settings.rb:253:in `get_array'
remote:          /tmp/build_571ced5049bd8f6d5aa742e589ae07bf/vendor/bundle/ruby/2.5.0/gems/bundler-1.15.2/lib/bundler/settings.rb:179:in `without'
remote:          /tmp/build_571ced5049bd8f6d5aa742e589ae07bf/vendor/bundle/ruby/2.5.0/gems/bundler-1.15.2/lib/bundler/cli/install.rb:169:in `normalize_groups'
remote:          /tmp/build_571ced5049bd8f6d5aa742e589ae07bf/vendor/bundle/ruby/2.5.0/gems/bundler-1.15.2/lib/bundler/cli/install.rb:24:in `run'
remote:          /tmp/build_571ced5049bd8f6d5aa742e589ae07bf/vendor/bundle/ruby/2.5.0/gems/bundler-1.15.2/lib/bundler/cli.rb:186:in `block in install'
remote:          /tmp/build_571ced5049bd8f6d5aa742e589ae07bf/vendor/bundle/ruby/2.5.0/gems/bundler-1.15.2/lib/bundler/settings.rb:92:in `temporary'
remote:          /tmp/build_571ced5049bd8f6d5aa742e589ae07bf/vendor/bundle/ruby/2.5.0/gems/bundler-1.15.2/lib/bundler/cli.rb:185:in `install'

.bundle / config

---
BUNDLE_WITHOUT: ""