Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'indexOf')

根据提供的引用内容，问题中的错误Uncaught (in promise) TypeError: Cannot read properties of undefined (reading 'indexOf')是由于在一个Promise中尝试读取一个未定义的变量而引起的。具体来说，当调用indexOf()方法时，该方法试图读取一个undefined对象的属性。这可能是因为前端代码中没有正确的定义或初始化该变量。为了解决这个问题，可以检查相关的代码，确保在调用indexOf()方法之前正确地定义和初始化了变量。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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