Website Application - User Request Error

Error in:
https://www.hesimanipur.org.in/WebResource.axd?d=pynGkmcFUV13He1Qd6_TZNZ1uqrYjM36OY5I9A-8OVSMlfyi_X7g2jf7onV4xseKrWzNlZclLn0nRj2pj0YbQQ2&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)

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