Question

配置新计算机（Mac OS Mojave-版本10.14.2）。

使用rbenv安装ruby之后。我正在尝试安装一些gem并运行：

gem install rake bundler rspec rubocop pry pry-byebug hub colored octoki

但是它给了我以下错误：

ERROR:  While executing gem ... (TypeError)
    incompatible marshal file format (can't be read)
    format version 4.8 required; 60.33 given

这是我的宝石环境：

RubyGems Environment:
  - RUBYGEMS VERSION: 2.7.6
  - RUBY VERSION: 2.5.3 (2018-10-18 patchlevel 105) [x86_64-darwin18]
  - INSTALLATION DIRECTORY: /Users/elise/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0
  - USER INSTALLATION DIRECTORY: /Users/elise/.gem/ruby/2.5.0
  - RUBY EXECUTABLE: /Users/elise/.rbenv/versions/2.5.3/bin/ruby
  - EXECUTABLE DIRECTORY: /Users/elise/.rbenv/versions/2.5.3/bin
  - SPEC CACHE DIRECTORY: /Users/elise/.gem/specs
  - SYSTEM CONFIGURATION DIRECTORY: /Users/elise/.rbenv/versions/2.5.3/etc
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-darwin-18
  - GEM PATHS:
     - /Users/elise/.rbenv/versions/2.5.3/lib/ruby/gems/2.5.0
     - /Users/elise/.gem/ruby/2.5.0
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :backtrace => false
     - :bulk_threshold => 1000
     - :sources => ["http://gems.rubyforge.org/", "http://gems.github.com"]
     - :benchmark => false
     - "gem" => "--no-document"
  - REMOTE SOURCES:
     - http://gems.rubyforge.org/
     - http://gems.github.com
  - SHELL PATH:
     - /Users/elise/.rbenv/versions/2.5.3/bin
     - /usr/local/Cellar/rbenv/1.1.1/libexec
     - ./bin
     - ./node_modules/.bin
     - /Users/elise/.rbenv/shims
     - /Users/elise/.rbenv/bin
     - /usr/local/bin
     - /usr/bin
     - /bin
     - /usr/sbin
     - /sbin
     - /usr/local/sbin

有人知道此错误来自何处吗？感谢您的帮助。

Answer 1

您仅在gem配置中启用了非常老的（而不是维护的）远程gem源。这可能是由于某些旧的迁移配置或遵循一些过时且过时的建议所致。

要解决此问题，您首先需要删除过时的宝石资源，然后添加当前应该使用的唯一宝石资源。为此，您可以从终端运行以下命令：

gem sources --remove http://gems.github.com/
gem sources --remove http://gems.rubyforge.org/

gem sources --add https://rubygems.org/

Answer 2

您必须删除拥有的所有宝石资源，并添加https://rubygems.org/。请注意，http://gems.rubyforge.org/和http://gems.github.com已永久死亡，应将其删除。您可以运行以下命令列出来源：

<div id="app">
  <div>
    <label for="name">Name</label>
    <input type="text" @keypress="checkField" v-model="name">
    <span v-if="checkName">Checks out </span>
    <span v-if="!checkName">Pleas enter valid name</span>
  </div>

  <div>
    <label for="Age">Age</label>
    <input type="number" @keypress="checkField2" v-model="age">
    <span v-if="checkAge">Enter Valid Age </span>
    <span v-if="!checkAge">Not a valid age</span>
  </div>

<div>
  <select name="" id="">
    <option disabled selected>Please Choose</option>
    <option v-for="gender in genders" :value="gender">
      {{gender}}
    </option>
  </select>
  <span v-if="genderField">Please select a gender</span>
  <span v-if="!genderField">Green means go</span>
</div>
 <div>
   <button @click="checkSubmit(e)">Submit</button>
 </div>
</div>

您应该得到这样的东西：

 data: {
    name: "",
    checkName: "",
    age: "",
    checkAge: "",
    genders : ["Male",'Female',"Other"],
    genderField: "" 
  },
  methods: {
    checkField() {
      if (!this.amount) {
        this.checkName = true
      }
    },
    checkGender() {
                if(!this.genders){
            this.genderField = true
        }
    },
    checkSubmit(e){
        //check if all fields are filled before submitting
      alert("it is working")
      e.preventDefault()
    }
  }

})

1）删除所有来源：

gem sources

2）添加正确的来源：

*** CURRENT SOURCES ***

//gems.rubyforge.org/
//gems.github.com

此外，从不 gem sources -r http://gems.rubyforge.org/ gem sources -r http://gems.github.com

希望这会有所帮助！

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