大哥，你这部署上去报错啊

[TrustDec]

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Error: connect ETIMEDOUT
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at PoolConnection.Connection._handleConnectTimeout (/usr/src/app/node_modules/mysql/lib/Connection.js:409:13)
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at Object.onceWrapper (events.js:421:28)
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at Socket.emit (events.js:315:20)
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at Socket._onTimeout (net.js:481:8)
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at listOnTimeout (internal/timers.js:549:17)
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at processTimers (internal/timers.js:492:7)
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--------------------
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at Protocol._enqueue (/usr/src/app/node_modules/mysql/lib/protocol/Protocol.js:144:48)
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at Protocol.handshake (/usr/src/app/node_modules/mysql/lib/protocol/Protocol.js:51:23)
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at PoolConnection.connect (/usr/src/app/node_modules/mysql/lib/Connection.js:116:18)
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at Pool.getConnection (/usr/src/app/node_modules/mysql/lib/Pool.js:48:16)
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at /usr/src/app/work/mysql.js:11:10
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at new Promise ()
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at Object.query (/usr/src/app/work/mysql.js:9:10)
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at /usr/src/app/routes/index.js:6:25
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at Layer.handle [as handle_request] (/usr/src/app/node_modules/express/lib/router/layer.js:95:5)
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at next (/usr/src/app/node_modules/express/lib/router/route.js:137:13) {
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errorno: 'ETIMEDOUT',
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code: 'ETIMEDOUT',
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syscall: 'connect',
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fatal: true
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}
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(node:19) UnhandledPromiseRejectionWarning: TypeError: Cannot read property '0' of undefined
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at /usr/src/app/routes/index.js:8:16
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at runMicrotasks ()
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at processTicksAndRejections (internal/process/task_queues.js:97:5)
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(node:19) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag --unhandled-rejections=strict (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 8)
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