[英]Error after rake db:migrate command: rake aborted! NoMethodError: undefined method `accept' for nil:NilClass
[英]rake db: commands show NoMethodError: undefined method `chomp' for nil:NilClass error
当 rake db: 命令执行时,它显示错误
warning: parser/current is loading parser/ruby26, which recognizes
warning: 2.6.7-compliant syntax, but you are running 2.6.2.
warning: please see https://github.com/whitequark/parser#compatibility-with-ruby-mri.
C:/Ruby26-x64/bin/rake: No such file or directory - which yarn
rake aborted!
NoMethodError: undefined method `chomp' for nil:NilClass
C:/.../config/environment.rb:5:in `<main>'
Tasks: TOP => db:migrate => db:load_config => environment
(See full trace by running task with --trace)
这发生在 Windows10 机器上,但 mac 机器工作正常,没有错误。 这是 Ruby 轨道应用。 这是 environment.rb:
# Load the Rails application.
require_relative 'application'
# Initialize the Rails application.
Rails.application.initialize!
任何帮助,将不胜感激。
编辑:使用 --trace 标志运行 rake 的 output 以查看 NoMethodError 的确切来源( rake --trace db:migrate
):
rake --trace db:migrate
warning: parser/current is loading parser/ruby26, which recognizes
warning: 2.6.7-compliant syntax, but you are running 2.6.2.
warning: please see https://github.com/whitequark/parser#compatibility-with-ruby-mri.
** Invoke db:migrate (first_time)
** Invoke db:load_config (first_time)
** Invoke environment (first_time)
** Execute environment
C:/Ruby26-x64/bin/rake: No such file or directory - which yarn
rake aborted!
NoMethodError: undefined method `chomp' for nil:NilClass
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/mjml-rails-4.6.1/lib/mjml.rb:68:in `check_for_yarn_mjml_binary'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/mjml-rails-4.6.1/lib/mjml.rb:44:in `valid_mjml_binary'
C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/mjml-rails-4.6.1/lib/mjml/railtie.rb:13:in `block in <class:Railtie>'
回答我自己的问题:
我和我的团队在调查中发现 Gemfile 和 Gemfile.lock 中指定的版本不同。 版本已显式升级,因此我们必须加载预定义的 Gemfile.lock,并在同一版本上添加 gem 解决了这个问题。 因此,对于其他面临此问题的人,请检查版本(Gemfile 和 Gemfile.lock)。
PS。 令我们惊讶的是,它实际上与数据库配置没有任何关系。
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