Nodemon craches after a while

[Svahnen]

nodemon
[nodemon] 1.13.3
[nodemon] to restart at any time, enter rs
[nodemon] watching: .
[nodemon] starting node app.js
HTTP Server running on port: 3000
HTTPS Server running on port: 3001
MySql Connected
events.js:183
throw er; // Unhandled 'error' event
^

Error: Connection lost: The server closed the connection.
at Protocol.end (/root/node/node/node_modules/mysql/lib/protocol/Protocol.js:113:13)
at Socket. (/root/node/node/node_modules/mysql/lib/Connection.js:109:28)
at emitNone (events.js:111:20)
at Socket.emit (events.js:208:7)
at endReadableNT (_stream_readable.js:1055:12)
at _combinedTickCallback (internal/process/next_tick.js:138:11)
at process._tickCallback (internal/process/next_tick.js:180:9)
[nodemon] app crashed - waiting for file changes before starting...