api服务器运行一阵后会报错

[shenyaocan]

D:\nodejs\shuti\api>node index.js
koa deprecated Support for generators will be removed in v3. See the documentation for examples of how to convert old middleware https://github.com/koajs/koa/blob/master/docs/migration.md index.js:72:5
(node:14512) Warning: Accessing non-existent property 'del' of module exports inside circular dependency
(Use node --trace-warnings ... to show where the warning was created)
应用已经启动，http://localhost:3000
node:events:504
throw er; // Unhandled 'error' event
^

Error: Connection lost: The server closed the connection.
at Protocol.end (D:\nodejs\shuti\api\node_modules\mysql\lib\protocol\Protocol.js:112:13)
at Socket. (D:\nodejs\shuti\api\node_modules\mysql\lib\Connection.js:94:28)
at Socket. (D:\nodejs\shuti\api\node_modules\mysql\lib\Connection.js:526:10)
at Socket.emit (node:events:538:35)
at endReadableNT (node:internal/streams/readable:1345:12)
at processTicksAndRejections (node:internal/process/task_queues:83:21)
Emitted 'error' event on Connection instance at:
at Connection._handleProtocolError (D:\nodejs\shuti\api\node_modules\mysql\lib\Connection.js:423:8)
at Protocol.emit (node:events:526:28)
at Protocol._delegateError (D:\nodejs\shuti\api\node_modules\mysql\lib\protocol\Protocol.js:398:10)
at Protocol.end (D:\nodejs\shuti\api\node_modules\mysql\lib\protocol\Protocol.js:116:8)
at Socket. (D:\nodejs\shuti\api\node_modules\mysql\lib\Connection.js:94:28)
[... lines matching original stack trace ...]
at processTicksAndRejections (node:internal/process/task_queues:83:21) {
fatal: true,
code: 'PROTOCOL_CONNECTION_LOST'
}