rails 5，rbenv-Rails控制台无法启动-库未加载：/usr/local/opt/readline/lib/libreadline.7.dylib（LoadError）

Question

当我在终端中运行“ rails c”命令时，由于某种原因它无法启动rails控制台并引发错误。我正在使用rbenv运行Rails 5.2.2。

rails c

它引发以下错误。

Running via Spring preloader in process 13912
Traceback (most recent call last):
    50: from -e:1:in `<main>'
    49: from /Users/wemteq/.rbenv/versions/2.5.0/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
    48: from /Users/wemteq/.rbenv/versions/2.5.0/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
    47: from /Users/wemteq/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:285:in `load'
    ...
     7: from /Users/wemteq/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:291:in `require'
     6: from /Users/wemteq/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:257:in `load_dependency'
     5: from /Users/wemteq/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:291:in `block in require'
     4: from /Users/wemteq/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
     3: from /Users/wemteq/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
     2: from /Users/wemteq/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/loaded_features_index.rb:65:in `register'
     1: from /Users/wemteq/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
/Users/wemteq/.rbenv/versions/2.5.0/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.2/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require': dlopen(/Users/wemteq/.rbenv/versions/2.5.0/lib/ruby/2.5.0/x86_64-darwin17/readline.bundle, 9): Library not loaded: /usr/local/opt/readline/lib/libreadline.7.dylib (LoadError)
  Referenced from: /Users/wemteq/.rbenv/versions/2.5.0/lib/ruby/2.5.0/x86_64-darwin17/readline.bundle
  Reason: image not found - /Users/wemteq/.rbenv/versions/2.5.0/lib/ruby/2.5.0/x86_64-darwin17/readline.bundle

它一周前有效，但现在不起作用。有任何想法吗？

Answer 1

我从一些研究中发现了2个解决方案。

Library not loaded: /usr/local/opt/readline/lib/libreadline.7.dylib (LoadError)

1. libreadline.7.dylib丢失，因此将libreadline.8.0.dylib链接到libreadline.7.dylib对我有用。

   ln -s /usr/local/opt/readline/lib/libreadline.8.0.dylib /usr/local/opt/readline/lib/libreadline.7.dylib

libreadline版本可能有所不同。您可以浏览/ usr / local / opt / readline / lib /目录中的可用文件。

2. 开发组中的rb-readline gem将解决此问题。

   gem'rb-readline'