Website Application - User Request Error

Error in:
https://mis.sasomanipur.org/WebResource.axd?d=pynGkmcFUV13He1Qd6_TZO8CEvr_ssPy1L7LGi3eQi6ctkixptLu46MPY5uOJF3cOCheEF77t399LDWBhzWNVQ2&t=638901734248157332

Error Message:
This is an invalid webresource request.

Stacktrace Error Message:
at System.Web.Handlers.AssemblyResourceLoader.System.Web.IHttpHandler.ProcessRequest(HttpContext context) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Return Process
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