The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received
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The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
最后一次成功发送到服务器的数据包是0毫秒前。驱动程序没有从服务器接收任何数据包。
原因:数据库没有打开。。。
解决:打开数据库
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