Invalid WebSocket frame: invalid UTF-8 sequence

[zekageri]

I have a websocket server written in node js.
I'm sending text packets from an esp32.

When the server gets a packet it immidiately throws an error:

[Socket] -  Error: Invalid WebSocket frame: invalid UTF-8 sequence
May 9 01:50:37 PM      at Receiver.dataMessage (/opt/render/project/src/node_modules/ws/lib/receiver.js:532:18)
May 9 01:50:37 PM      at Receiver.getData (/opt/render/project/src/node_modules/ws/lib/receiver.js:459:17)
May 9 01:50:37 PM      at Receiver.startLoop (/opt/render/project/src/node_modules/ws/lib/receiver.js:158:22)
May 9 01:50:37 PM      at Receiver._write (/opt/render/project/src/node_modules/ws/lib/receiver.js:84:10)
May 9 01:50:37 PM      at writeOrBuffer (node:internal/streams/writable:392:12)
May 9 01:50:37 PM      at _write (node:internal/streams/writable:333:10)
May 9 01:50:37 PM      at Writable.write (node:internal/streams/writable:337:10)
May 9 01:50:37 PM      at Socket.socketOnData (/opt/render/project/src/node_modules/ws/lib/websocket.js:1278:35)
May 9 01:50:37 PM      at Socket.emit (node:events:513:28)
May 9 01:50:37 PM      at addChunk (node:internal/streams/readable:324:12) {
May 9 01:50:37 PM    code: 'WS_ERR_INVALID_UTF8',
May 9 01:50:37 PM    [Symbol(status-code)]: 1007
May 9 01:50:37 PM  }

And my esp disconnects as soon as the server throws an error like this.
What could be the problem?

When i send the packet i write it to the Serial to verify its ok.

webSocket.sendTXT(messageString,msgLength);
Serial.printf("\n[SOCKET] - %s\n", messageString);

[SOCKET] - Connected
[SOCKET] - {"header":{"from":"hsh","to":"client","key":27483611521760,"controll":"setHeader"},"data":"connect"}
[SOCKET] - Disconnected

[Links2004]

see #814