Webhook test successful but nothing posts to Discord through webhook

[deterministicj]

Describe the bug
500 Internal Server Error when testing Discord webhook with http post request

I have the following types of Webhooks registered
Discord webhook with game subtype

Expected behavior
A test post

Additional context
Response for reference:

{
"id": "3183150c-91f1-45e7-84ff-085cf3c02ba4",
"requestId": "8104c28f-b9db-4479-a14b-300c7b1f118a",
"statusCode": 500,
"errorCode": 0,
"message": "An error has occurred. For more information, please check the logs for error ID 3183150c-91f1-45e7-84ff-085cf3c02ba4"
}

EDIT: I fixed this by using Insomnia instead for the POST. Webhook still not sending anything in Discord though even after successful POST.

[deterministicj]

I also manually tested sending a POST to the webhook to make sure it wasn't permissions on the Discord end. No issues with that. Seems to be something on the server end.

[Bucketsmith]

I could not get it to work, either.

[Casper-O]

Did a test request with postman and Insomnia, with postman i get the response "1" and with Insomnia it is empty - if i send wrong type or webhook it gives an error. but i see nothing posted to Discord

* Preparing request to https://humblebundlenotifications.azurewebsites.net/api/TestWebhook/
* Current time is 2022-10-31T18:48:43.053Z
* Enable automatic URL encoding
* Using default HTTP version
* Enable SSL validation
* Found bundle for host humblebundlenotifications.azurewebsites.net: 0x2b69e8655a0 [serially]
* Can not multiplex, even if we wanted to!
* Re-using existing connection! (#4) with host humblebundlenotifications.azurewebsites.net
* Connected to humblebundlenotifications.azurewebsites.net (52.252.160.21) port 443 (#4)
* TLSv1.2 (OUT), TLS header, Supplemental data (23):

> POST /api/TestWebhook/ HTTP/1.1
> Host: humblebundlenotifications.azurewebsites.net
> User-Agent: insomnia/2022.6.0
> Content-Type: application/json
> Accept: */*
> Content-Length: 179

| {
|     "type": 0,
|     "webhook": "https://discord.com/api/webhooks/*************",
|     "webhookType": 0
| }

* TLSv1.2 (IN), TLS header, Supplemental data (23):
* Mark bundle as not supporting multiuse

< HTTP/1.1 200 OK
< Content-Length: 0
< Date: Mon, 31 Oct 2022 18:48:42 GMT
< Server: Microsoft-IIS/10.0
< Cache-Control: no-cache
< Expires: -1
< Pragma: no-cache
< X-Powered-By: ASP.NET

JSON request works fine

* Preparing request to https://humblebundlenotifications.azurewebsites.net/api/TestWebhook/
* Current time is 2022-10-31T18:46:19.860Z
* Enable automatic URL encoding
* Using default HTTP version
* Enable SSL validation
* Too old connection (490 seconds), disconnect it
* Connection 2 seems to be dead!
* Closing connection 2
* TLSv1.2 (OUT), TLS header, Unknown (21):
* TLSv1.2 (OUT), TLS alert, decode error (562):
* Too old connection (490 seconds), disconnect it
* Connection 3 seems to be dead!
* Closing connection 3
* TLSv1.2 (OUT), TLS header, Unknown (21):
* TLSv1.2 (OUT), TLS alert, decode error (562):
* Hostname in DNS cache was stale, zapped
*   Trying 52.252.160.21:443...
* Connected to humblebundlenotifications.azurewebsites.net (52.252.160.21) port 443 (#4)
* ALPN, offering h2
* ALPN, offering http/1.1
* TLSv1.0 (OUT), TLS header, Certificate Status (22):
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* TLSv1.2 (IN), TLS header, Certificate Status (22):
* TLSv1.3 (IN), TLS handshake, Server hello (2):
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (IN), TLS handshake, Server key exchange (12):
* TLSv1.2 (IN), TLS handshake, Server finished (14):
* TLSv1.2 (OUT), TLS header, Certificate Status (22):
* TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
* TLSv1.2 (OUT), TLS header, Finished (20):
* TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.2 (OUT), TLS header, Certificate Status (22):
* TLSv1.2 (OUT), TLS handshake, Finished (20):
* TLSv1.2 (IN), TLS header, Finished (20):
* TLSv1.2 (IN), TLS header, Certificate Status (22):
* TLSv1.2 (IN), TLS handshake, Finished (20):
* SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384
* ALPN, server accepted to use http/1.1
* Server certificate:
*  subject: C=US; ST=WA; L=Redmond; O=Microsoft Corporation; CN=*.azurewebsites.net
*  start date: Mar 14 18:39:55 2022 GMT
*  expire date: Mar  9 18:39:55 2023 GMT
*  subjectAltName: host "humblebundlenotifications.azurewebsites.net" matched cert's "*.azurewebsites.net"
*  issuer: C=US; O=Microsoft Corporation; CN=Microsoft Azure TLS Issuing CA 01
*  SSL certificate verify ok.
* TLSv1.2 (OUT), TLS header, Supplemental data (23):

> POST /api/TestWebhook/ HTTP/1.1
> Host: humblebundlenotifications.azurewebsites.net
> User-Agent: insomnia/2022.6.0
> Content-Type: application/json
> Accept: */*
> Content-Length: 115

| {
|     "type": 0,
|     "webhook": "https://webhook.site/******",
|     "webhookType": 1
| }

* TLSv1.2 (IN), TLS header, Supplemental data (23):
* Mark bundle as not supporting multiuse

< HTTP/1.1 200 OK
< Content-Length: 0
< Date: Mon, 31 Oct 2022 18:46:20 GMT
< Server: Microsoft-IIS/10.0
< Cache-Control: no-cache
< Expires: -1
< Pragma: no-cache
< X-Powered-By: ASP.NET


* Connection #4 to host humblebundlenotifications.azurewebsites.net left intact