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:

(node:42584) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
[Sentry] express is not instrumented. This is likely because you required/imported express before calling `Sentry.init()`.
(node:42584) [DEP0044] DeprecationWarning: The `util.isArray` API is deprecated. Please use `Array.isArray()` instead.
This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). The promise rejected with the reason:
{
  error: 'Failed to send notification: {"error":{"code":404,"message":"Requested entity was not found.","status":"NOT_FOUND","details":[{"@type":"type.googleapis.com/google.firebase.fcm.v1.FcmError","errorCode":"UNREGISTERED"}]}}'
}
This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). The promise rejected with the reason:
Error: Error loading allowlist: {"data":[]}
    at Object.LoadIpAllowlist (C:\Applications\RunFree\WebRoot\modules\security\mfa.js:27:16)
    at runNextTicks (node:internal/process/task_queues:65:5)
    at listOnTimeout (node:internal/timers:555:9)
    at process.processTimers (node:internal/timers:529:7)