TypeError: Cannot read property 'setCurrentKey' of undefined

TypeError: Cannot read property 'setCurrentKey' of undefined的错误通常是由于尝试在未定义的对象上调用方法或属性而引起的。根据你提供的引用内容，可以推断出这个错误可能与Vue框架和el-tree组件有关。具体来说，这个错误可能是因为在el-tree中使用setCurrentKey方法时，el-tree对象未正确定义或初始化所致。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [【微信小程序报错解决方法】TypeError: Cannot read property ‘setData‘ of undefined](https://blog.csdn.net/Jessieeeeeee/article/details/119703697)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
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- *3* [el-tree 报错 TypeError: Cannot read property ‘setCheckedKeys‘ of undefined](https://blog.csdn.net/W_Y_Long/article/details/128598412)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
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