iisnode encountered an error when processing the request.

HRESULT: 0x2
HTTP status: 500
HTTP subStatus: 1002
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:

WARN: Deployment options not present on command line and no instance.js file found; defaults for minimal local deployment used.
(node:4156) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
Cycligent Server MongoDB startup failure:
     failed to connect to server [cyclecade-live-shard-00-02-zclen.mongodb.net:27017] on first connect [Error: getaddrinfo ENOTFOUND cyclecade-live-shard-00-02-zclen.mongodb.net
    at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:66:26) {
  name: 'MongoError'
}]
Cycligent Server Stopped!