Dynamic CRM - Causing Internal Server Error (500)

Question

From past few days, I am getting Internal Server Error (500) in CRM application.

IIS Logs captured (Intenationaly hide domain name & Parameter value):

2023-08-26 03:36:05 prod-crm-web0 10.0.0.10 GET /500.html aspxerrorpath=/CodeManager/GetLevels 444 - 73.127.251.142 HTTP/1.1 Mozilla/5.0+(Windows+NT+10.0;+Win64;+x64)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Chrome/116.0.0.0+Safari/537.36 https://xxxx.xxxxxx.com:444/TabStripForm/Lead/?X_UserId=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX&X_LeadId=XXXXXXXXXXXXXXXXXXXX

What I capture, CRM returns 302 error & then internal server error with 500.html file.

2023-08-26 03:36:05 prod-crm-web0 10.0.0.10 POST /CodeManager/GetLevels X_UserId=dff4fc7a-6444-e611-80d4-000d3a20f60e&X_ContactId= 444 - 73.127.251.142 HTTP/1.1 Mozilla/5.0+(Windows+NT+10.0;+Win64;+x64)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Chrome/116.0.0.0+Safari/537.36 https://xxxx.xxxx.com:444/TabStripForm/Lead/?X_UserId=xxxx&X_LeadId=xxxx 302 821 4171 631 -	

2023-08-26 03:36:05 prod-crm-web0 10.0.0.10 GET /500.html aspxerrorpath=/CodeManager/GetLevels 444 - 73.127.251.142 HTTP/1.1 Mozilla/5.0+(Windows+NT+10.0;+Win64;+x64)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Chrome/116.0.0.0+Safari/537.36 https://xxxx.xxxxx.com:444/TabStripForm/Lead/?X_UserId=xxxx&X_LeadId=xxxx 200 1013 4023 200 -