The message port closed before a response was received.

回答: 当出现"Unchecked runtime.lastError: The message port closed before a response was received"错误时，这意味着在发送方（背景页）接收到标签页的响应消息之前，sendResponse的消息端口已经关闭了。这可能是因为没有调用sendResponse函数或者后端只处理逻辑而没有调用sendResponse函数导致的。为了解决这个问题，需要确保在发送方（背景页）接收到响应消息之前，消息端口保持打开状态，并且在处理完逻辑后调用sendResponse函数来发送响应。\[1\]\[2\]\[3\]
#### 引用[.reference_title]
- *1* *2* [ The message port closed before a response was received的错误](https://blog.csdn.net/lvoelife/article/details/129058528)[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^v91^insert_down28v1,239^v3^insert_chatgpt"}} ] [.reference_item]
- *3* [谷歌浏览器扩展程序报错 The message port closed before a response was received.](https://blog.csdn.net/lamp_yang_3533/article/details/100174074)[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^v91^insert_down28v1,239^v3^insert_chatgpt"}} ] [.reference_item]
[ .reference_list ]