Hi @skumari1 ,
Not sure if you checked this already, but it looks similar to me.
https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/aem-6-4-uncaught-slingexception-no-custom-code/td-p/304554
Also, If it's AEM Classic, not sure which SP you have installed currently, I woul...