MODULE_SET_RESPONSE_ERROR_STATUS Warning In my error log with IIS error

Question

I created a web service with several endpoints. And I posted this on my public iis server.

My client is trying to get to my endpoints, except for one endpoint the rest of the endpoint is working fine.

I can hit this endpoint using the soap interface. But I could not hit them with the application. Using the failed request option, I noticed the following warning

ModuleName = "ManagedPipelineHandler", Notification = "MAP_REQUEST_HANDLER", HttpStatus = "500", HttpReason = "Internal server error", HttpSubStatus = "0", ErrorCode = "Operation completed successfully. (0x0)", ConfigExceptionInfo = ""

Please help me figure out this problem. Are problems on my side?