Unable to smart tag AEM assets as instructed in the tutorials

Hello,

I am new to Adobe Experience Manager(AEM) and been going through the foundational learning tutorials. |When I try to do smart tagging of asserts. It isn't working. I see errors but no details about what the error is. I have tried to do configuration through webconsole but couldn't find appropriate configurations. Would appreciate any help.

Thanks and Regards,

Ravi