Internal Server Error - node sandbox.js

[laien]

I'm trying to run node sandbox.js but I'm getting Internal Server Error:

undefined
Error: Internal Server Error
    at Request.callback (/home/runner/work/sbanken-ynab-importer/sbanken-ynab-importer/node_modules/superagent/lib/node/index.js:804:15)
    at /home/runner/work/sbanken-ynab-importer/sbanken-ynab-importer/node_modules/superagent/lib/node/index.js:1036:18
    at IncomingMessage.<anonymous> (/home/runner/work/sbanken-ynab-importer/sbanken-ynab-importer/node_modules/superagent/lib/node/parsers/json.js:19:7)
    at IncomingMessage.emit (events.js:326:22)
    at endReadableNT (_stream_readable.js:1223:12)
    at processTicksAndRejections (internal/process/task_queues.js:84:21) {
  status: 500,
  response: Response {
    _events: [Object: null prototype] {},
    _eventsCount: 0,
    _maxListeners: undefined,
    res: IncomingMessage {
      _readableState: [ReadableState],
      readable: false,
      _events: [Object: null prototype],
      _eventsCount: 4,
      _maxListeners: undefined,
      socket: [TLSSocket],
      connection: [TLSSocket],
      httpVersionMajor: 1,
      httpVersionMinor: 1,
      httpVersion: '1.1',
      complete: true,
      headers: [Object],
      rawHeaders: [Array],
      trailers: {},
      rawTrailers: [],
      aborted: false,
      upgrade: false,
      url: '',
      method: null,
      statusCode: 500,
      statusMessage: 'Internal Server Error',
      client: [TLSSocket],
      _consuming: true,
      _dumped: false,
      req: [ClientRequest],
      text: '{"errorType":"System","isError":true,"errorCode":null,"errorMessage":"Could not complete the request due to an expected or unexpected error.","traceId":"xxxxx"}',
      [Symbol(kCapture)]: false
    },

https://localhost:3001/api/accounts is showing my accounts.