TypeError: Cannot read properties of undefined (reading 'then') (on line 17)
时间: 2023-10-17 11:23:55 浏览: 38
根据提供的引用内容,TypeError: Cannot read properties of undefined (reading 'then') (on line 17) 是一个错误消息,表示在第17行出现了无法读取未定义属性的错误。这个错误消息通常是由于在一个未定义的对象上尝试访问属性或方法导致的。根据引用中提供的代码片段,这个错误可能是因为在调用一个未定义的对象的方法时发生的。在这种情况下,可能需要检查代码的逻辑以确保在涉及到对象的方法或属性之前,对象已经被正确地定义和初始化了。如果对象没有正确定义或初始化,就会导致无法读取未定义属性的错误。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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