Unexpected server response: 401

[borahanarslan]

Hi,
I bought a paid api from https://www.ankr.com/ but it still gives the same error, sometimes it does and sometimes it doesn't. What could be the source of the problem

`Listening for Liquidity Addition to token 0x2b3f34e9d4b127797ce6244ea341a83733ddd6e4
node:events:368
throw er; // Unhandled 'error' event
^

Error: Unexpected server response: 401
at ClientRequest. (C:\Users\borah\Desktop\bot\node_modules\ws\lib\websocket.js:604:7)
at ClientRequest.emit (node:events:390:28)
at HTTPParser.parserOnIncomingClient [as onIncoming] (node:_http_client:623:27)
at HTTPParser.parserOnHeadersComplete (node:_http_common:128:17)
at TLSSocket.socketOnData (node:_http_client:487:22)
at TLSSocket.emit (node:events:390:28)
at addChunk (node:internal/streams/readable:324:12)
at readableAddChunk (node:internal/streams/readable:297:9)
at TLSSocket.Readable.push (node:internal/streams/readable:234:10)
at TLSWrap.onStreamRead (node:internal/stream_base_commons:190:23)
Emitted 'error' event on WebSocket instance at:
at abortHandshake (C:\Users\borah\Desktop\bot\node_modules\ws\lib\websocket.js:731:15)
at ClientRequest. (C:\Users\borah\Desktop\bot\node_modules\ws\lib\websocket.js:604:7)
[... lines matching original stack trace ...]
at TLSSocket.Readable.push (node:internal/streams/readable:234:10)

Node.js v17.2.0

C:\Users\borah\Desktop\bot>`

[Nafidinara]

hi @borahanarslan what package node that you buy from ankr?