我正在将我现有的 Rails 应用程序升级5.2.0到6.1.4
我的 rails 版本是6.1.4.1& 我的 ruby 版本是2.5.3满足运行应用程序的条件。任何人都可以就如何解决这个问题的方向给我帮助？
但是，问题是当我尝试运行服务器时出现以下错误：
> > Booting Puma
=> Rails 6.1.4.1 application starting in development
=> Run `bin/rails server --help` for more startup options
Exiting
Traceback (most recent call last):
19: from bin/rails:9:in `<main>'
18: from bin/rails:9:in `require'
17: from /Users/heron/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/railties-6.1.4.1/lib/rails/commands.rb:18:in `<top (required)>'
16: from /Users/heron/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/railties-6.1.4.1/lib/rails/command.rb:48:in `invoke'
15: from /Users/heron/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/railties-6.1.4.1/lib/rails/command/base.rb:69:in `perform'
14: from /Users/heron/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/thor-1.1.0/lib/thor.rb:392:in `dispatch'
13: from /Users/heron/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/thor-1.1.0/lib/thor/invocation.rb:127:in `invoke_command'
12: from /Users/heron/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/thor-1.1.0/lib/thor/command.rb:27:in `run'
11: from /Users/heron/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/railties-6.1.4.1/lib/rails/commands/server/server_command.rb:135:in `perform'
10: from /Users/heron/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/railties-6.1.4.1/lib/rails/commands/server/server_command.rb:135:in `tap'
9: from /Users/heron/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/railties-6.1.4.1/lib/rails/commands/server/server_command.rb:144:in `block in perform'
8: from /Users/heron/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/railties-6.1.4.1/lib/rails/commands/server/server_command.rb:37:in `start'
7: from /Users/heron/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/railties-6.1.4.1/lib/rails/commands/server/server_command.rb:77:in `log_to_stdout'
6: from /Users/heron/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/rack-2.2.3/lib/rack/server.rb:422:in `wrapped_app'
5: from /Users/heron/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/rack-2.2.3/lib/rack/server.rb:249:in `app'
4: from /Users/heron/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/rack-2.2.3/lib/rack/server.rb:349:in `build_app_and_options_from_config'
3: from /Users/heron/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/rack-2.2.3/lib/rack/builder.rb:66:in `parse_file'
2: from /Users/heron/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/rack-2.2.3/lib/rack/builder.rb:105:in `load_file'
1: from /Users/heron/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/rack-2.2.3/lib/rack/builder.rb:117:in `new_from_string'
/Users/heron/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0/gems/rack-2.2.3/lib/rack/builder.rb:233:in `to_app': missing run or map statement (RuntimeError)