Hello Customer14613
If your requests return status code 500 it means that your application has ends with errors.
First thing you should do is check Logs in our Control panel:
Control Panel -> Websites -> Manage -> Logs
https://help.monsterasp.net/books/debugging/page/logs-and-resources
If you check details of these Logs and still can't find cause of these errors, you’ll need to enable ASP.NET Core debug logging.
Please follow this guide to turn it on:
https://help.monsterasp.net/books/debugging/page/aspnet-core-debug-logging
Best Regards
MonsterASP.NET team