iisnode encountered an error when processing the request.

HRESULT: 0x6d
HTTP status: 500
HTTP subStatus: 1013
HTTP reason: Internal Server Error

You are receiving this HTTP 200 response because system.webServer/iisnode/@devErrorsEnabled configuration setting is 'true'.

In addition to the log of stdout and stderr of the node.exe process, consider using debugging and ETW traces to further diagnose the problem.

The last 64k of the output generated by the node.exe process to stderr is shown below:

ERROR TypeError: Converting circular structure to JSON
    --> starting at object with constructor 'XMLHttpRequest'
    |     property 'upload' -> object with constructor 'XMLHttpRequestUpload'
    --- property '_request' closes the circle
    at JSON.stringify (<anonymous>)
    at readableObjectToString (D:\Octopus\Applications\Prod-web\WhoIsWho.Frontend\2.1.0.714\server\main.js:1:1192082)
    at resolvePromise (D:\Octopus\Applications\Prod-web\WhoIsWho.Frontend\2.1.0.714\server\main.js:1:1195860)
    at D:\Octopus\Applications\Prod-web\WhoIsWho.Frontend\2.1.0.714\server\main.js:1:1193953
    at rejected (D:\Octopus\Applications\Prod-web\WhoIsWho.Frontend\2.1.0.714\server\main.js:1:3685316)
    at ZoneDelegate.invoke (D:\Octopus\Applications\Prod-web\WhoIsWho.Frontend\2.1.0.714\server\main.js:1:1179141)
    at Object.onInvoke (D:\Octopus\Applications\Prod-web\WhoIsWho.Frontend\2.1.0.714\server\main.js:1:1645130)
    at ZoneDelegate.invoke (D:\Octopus\Applications\Prod-web\WhoIsWho.Frontend\2.1.0.714\server\main.js:1:1179037)
    at Zone.run (D:\Octopus\Applications\Prod-web\WhoIsWho.Frontend\2.1.0.714\server\main.js:1:1171555)
    at D:\Octopus\Applications\Prod-web\WhoIsWho.Frontend\2.1.0.714\server\main.js:1:1197377 {
  rejection: ApiRequestError {
    attempt: 1,
    message: 'Ошибка загрузки данных',
    internalError: HttpErrorResponse {
      headers: [HttpHeaders],
      status: 0,
      statusText: 'Unknown Error',
      url: 'https://whoiswho.dp.ru/api/Specialization/Get',
      ok: false,
      name: 'HttpErrorResponse',
      message: 'Http failure response for https://whoiswho.dp.ru/api/Specialization/Get: 0 Unknown Error',
      error: [ProgressEvent]
    },
    reason: 0,
    retryable: false
  },
  promise: ZoneAwarePromise [Promise] {
    __zone_symbol__state: 0,
    __zone_symbol__value: ApiRequestError {
      attempt: 1,
      message: 'Ошибка загрузки данных',
      internalError: [HttpErrorResponse],
      reason: 0,
      retryable: false
    }
  },
  zone: <ref *1> Zone {
    _parent: Zone {
      _parent: null,
      _name: '<root>',
      _properties: {},
      _zoneDelegate: [ZoneDelegate]
    },
    _name: 'angular',
    _properties: { isAngularZone: true },
    _zoneDelegate: <ref *2> ZoneDelegate {
      _taskCounts: [Object],
      zone: [Circular *1],
      _parentDelegate: [ZoneDelegate],
      _forkZS: null,
      _forkDlgt: null,
      _forkCurrZone: null,
      _interceptZS: null,
      _interceptDlgt: null,
      _interceptCurrZone: null,
      _invokeZS: [Object],
      _invokeDlgt: [ZoneDelegate],
      _invokeCurrZone: [Circular *1],
      _handleErrorZS: [Object],
      _handleErrorDlgt: [ZoneDelegate],
      _handleErrorCurrZone: [Circular *1],
      _scheduleTaskZS: [Object],
      _scheduleTaskDlgt: [ZoneDelegate],
      _scheduleTaskCurrZone: [Circular *1],
      _invokeTaskZS: [Object],
      _invokeTaskDlgt: [ZoneDelegate],
      _invokeTaskCurrZone: [Circular *1],
      _cancelTaskZS: [Object],
      _cancelTaskDlgt: [ZoneDelegate],
      _cancelTaskCurrZone: [Circular *1],
      _hasTaskZS: [Object],
      _hasTaskDlgt: [ZoneDelegate],
      _hasTaskDlgtOwner: [Circular *2],
      _hasTaskCurrZone: [Circular *1]
    }
  },
  task: ZoneTask {
    _zone: <ref *1> Zone {
      _parent: [Zone],
      _name: 'angular',
      _properties: [Object],
      _zoneDelegate: [ZoneDelegate]
    },
    runCount: 0,
    _zoneDelegates: null,
    _state: 'notScheduled',
    type: 'microTask',
    source: 'Promise.then',
    data: ZoneAwarePromise [Promise] {
      __zone_symbol__state: true,
      __zone_symbol__value: undefined
    },
    scheduleFn: undefined,
    cancelFn: undefined,
    callback: [Function (anonymous)],
    invoke: [Function (anonymous)]
  }
}