blocks|key|3245131|text|尝试恢复到早期版本的StringIO|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3245132|gem+install+stringio+-v+0.1.4

gem+uninstall+stringio+#+remove+3.0.0+and+3.0.1|code-block|syntax|javascript|3245133|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try reverting to an earlier version of StringIO
<pre><code>gem install stringio -v 0.1.4

gem uninstall stringio # remove 3.0.0 and 3.0.1
</code></pre>

blocks|key|3245138|text|以上的答案对我都没有用。我所发生的是，我将gem+'rubocop',+'~>+0.67.2',+require:+false添加到Gemfile中，并运行bundle+install。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3245139|这个版本的rubocop似乎已经将psych作为依赖项安装，而psych则依赖于stringio，如果我错了，请告诉我，这肯定与bootsnap使用的stringio版本相冲突。|3245140|无论如何，为了解决这个问题，我只是删除了添加到Gemfile中的Gemfile行，并添加了gem+'rubocop',+require:+false+(安装了最新的rubocop版本)，然后再次运行bundle+install。|3245141|entityMap^0|L|16|1U|7|26|E|0|5|7|H|5|V|5|14|8|1S|8|23|8|0|N|7|W|7|19|T|2R|E|0^^$0|@$1|2|3|4|5|6|7|L|8|@$9|M|A|N|B|C]|$9|O|A|P|B|C]|$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|S|8|@$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]|$9|11|A|12|B|C]|$9|13|A|14|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|15|8|@$9|16|A|17|B|C]|$9|18|A|19|B|C]|$9|1A|A|1B|B|C]|$9|1C|A|1D|B|C]]|D|@]|E|$]]|$1|J|3|-4|5|6|7|1E|8|@]|D|@]|E|$]]]|K|$]]

None of the above answers worked for me. What happened for me is that I added <code>gem 'rubocop', '~&gt; 0.67.2', require: false</code> to <code>Gemfile</code> and ran <code>bundle install</code>.
This version of <code>rubocop</code> seems to have installed <code>psych</code> as a dependency and then <code>psych</code> has a dependency on <code>stringio</code> and I, correct me if I'm wrong, that must be conflicting with whatever <code>stringio</code> version is being used by <code>bootsnap</code>.
Anyway, to solve it I just deleted the <code>rubocop</code> line I added to <code>Gemfile</code> and added <code>gem 'rubocop', require: false</code> (which installed the latest rubocop version) then ran <code>bundle install</code> again.

blocks|key|356112|text|在更新了我的宝石之后，我开始得到这个错误。我试着卸载ruby和我所有的gems，更新rvm，但对我来说，解决方案似乎是更新rubygems。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|356113|gem+update+--system|code-block|syntax|javascript|356114|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I started getting this error after updating my gems. I tried uninstalling ruby and all my gems, updating rvm, but for me the solution appeared to be updating rubygems.
<pre><code>gem update --system
</code></pre>

blocks|key|356127|text|对我来说很管用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|356128|我的错误是:应用程序遇到了以下错误:类StringIO+(TypeError)的超类不匹配|356129|这个问题是由这个问题引起的，https://www.redmine.org/issues/35435。|offset|length|356130|可能对你有帮助。我还删除了与#gem+'+sdoc‘有关的所有宝石--在默认情况下，sdoc调用内部gem’StringIO‘，这是gem使用的GemFile.Lock，并且都有不同的版本，您可以检查GemFile.Lock中的差异，以查看您的两个版本之间的差异。|356131|entityMap|0|LINK|mutability|MUTABLE|url|https://www.redmine.org/issues/35435^0|0|0|E|10|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$F|U|G|V|1|W]]|A|$]]|$1|H|3|I|5|6|7|X|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q]]]]

It works for me.
My Error was: The application encountered the following error: superclass mismatch for class StringIO (TypeError)
The problem was caused by this issue
<a href="https://www.redmine.org/issues/35435" rel="nofollow noreferrer">https://www.redmine.org/issues/35435</a>
It might help you. I also removed all gems related to #gem 'sdoc'
It seams like by default sdoc call internally gem 'psych', which is the gem uses the StringIO and both have different version you can check the difference in your GemFile.Lock to see difference between your 2 versions.

blocks|key|1138153|text|正如其他人在@jason答案上说的那样，对于许多人来说，只要卸载现有的stringio，然后再次运行bundle+install，就可以解决这个问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1138154|++++gem+uninstall+stringio
++++bundle|code-block|syntax|javascript|1138155|entityMap^0|Z|8|1E|E|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

As others have said on @jason-lee answer, for many people, this can be fixed just by uninstalling the existing <code>stringio</code> then running <code>bundle install</code> again.
<pre class="lang-bash prettyprint-override"><code> gem uninstall stringio
 bundle
</code></pre>

blocks|key|3245171|text|当我将Ruby版本从2.7.6提高到3.0.4时，这个错误就消失了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3245172|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

The error was gone when I bumped Ruby version to 3.0.4 from 2.7.6

blocks|key|356235|text|关于Ubuntu的RVM+(与路径有关的问题)：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|356236|退出所有终端|356237|exit|code-block|syntax|javascript|356238|然后启动一个新的终端，然后：|356239|rvm+use+[your+version]
bundle+install
rails+c|356240|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

RVM on Ubuntu (path related issue):
Exit all terminals
<pre><code>exit
</code></pre>
Then start a new terminal, then:
<pre><code>rvm use [your version]
bundle install
rails c
</code></pre>

I am getting an error while creating a ruby on rails project. In command, I created a new project by typing <code>rails new club</code>, then <code>bundle</code>. Now, when I try to create my models and controllers by typing and entering <code>rails g resource Club name</code>, I get this error: <code>superclass mismatch for class StringIO (TypeError)</code>.
<pre><code>gems/bootsnap-1.9.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:
in `require': superclass mismatch for class StringIO (TypeError)
</code></pre>
I don't even has a class named <code>StringIO</code>, so I'm not sure where it came from.
<ul>
<li>ruby version: 2.6.8</li>
<li>rails: 6.1.4.1</li>
</ul>

Ruby on Rails error: superclass mismatch for class StringIO (TypeError)

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

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在创建rails项目时，我得到了一个错误。在命令中，我通过输入rails new club，然后输入bundle创建了一个新项目。现在，当我试图通过输入和输入rails g resource Club name来创建我的模型和控制器时，我得到了一个错误：superclass mismatch for class StringIO (TypeError)。gems/bootsnap-1.9.1/li

问Rails错误:类StringIO (TypeError)的超类不匹配
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