Website Application - User Request Error

Error in:
https://hesimanipur.org.in/WebResource.axd?d=pynGkmcFUV13He1Qd6_TZE2BR1YeWjA2JXWU6nEY1Br8DB8Hjy92gm3O5Vp2IiENqts2swYBpYDPIsFlUlN4WA2&t=638628405619783110

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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