excel-export: Promise rejection if token invalid or api not reachable SP 2

[Stezido]

• [x] I have searched the issues of this repository and believe that this is not a duplicate.

Description 😯

excel-export fails with following error if api cannot be reached:

[2022-04-22 14:57:39.178 +0000] ERROR (Excel-Export-Service on CPX-Z14FUDAJ0LV): Error validating token
    err: {
      "message": "connect ECONNREFUSED 127.0.0.1:8081",
      "stack":
          Error: connect ECONNREFUSED 127.0.0.1:8081
              at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1157:16)
      "config": {
        "url": "http://127.0.0.1:8081/api/version",
        "method": "get",
        "headers": {
          "Accept": "application/json, text/plain, */*",
          "Authorization": "Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySWQiOiJyb290IiwiYWRkcmVzcyI6IjFhZDM1OHRudVR2UWQ5V3BIUUxQWG1yWXQ5U2VwcGl3UFFOZ05MIiwib3JnYW5pemF0aW9uIjoiTXlPcmdhIiwib3JnYW5pemF0aW9uQWRkcmVzcyI6IjFhZDM1OHRudVR2UWQ5V3BIUUxQWG1yWXQ5U2VwcGl3UFFOZ05MIiwiZ3JvdXBzIjpbXSwiaWF0IjoxNjUwNjM5NDU1LCJleHAiOjE2NTA2NjgyNTV9.DyQzikfyKSO0hZ48g37QJPTzuHeZA7q0FzR0H3gnGqs",
          "User-Agent": "axios/0.21.4"
        },
        "transformRequest": [
          null
        ],
        "transformResponse": [
          null
        ],
        "timeout": 0,
        "xsrfCookieName": "XSRF-TOKEN",
        "xsrfHeaderName": "X-XSRF-TOKEN",
        "maxContentLength": -1,
        "maxBodyLength": -1,
        "transitional": {
          "silentJSONParsing": true,
          "forcedJSONParsing": true,
          "clarifyTimeoutError": false
        }
      },
      "code": "ECONNREFUSED"
    }
[2022-04-22 14:57:39.180 +0000] FATAL (Excel-Export-Service on CPX-Z14FUDAJ0LV): UNHANDLED PROMISE REJECTION
    err: {
      "type": "TypeError",
      "message": "Cannot read properties of undefined (reading 'status')",
      "stack":
          TypeError: Cannot read properties of undefined (reading 'status')
              at /home/stefan/github/TruBudget/excel-export-service/dist/index.js:79:37
              at processTicksAndRejections (node:internal/process/task_queues:96:5)
    }

The first error is maybe correct, but it shouldn't be an unhandled promise rejection.