Can you try using the custom workflow ?

I'm using AEM 6.5.21.0. Also this issue is only occuring in custom workflow and not for OOTB workflow(ManagePublication).

I just checked in other instance(not a fresh instance), I still see the same. Do I need to check any config in the workflow to allow images?

Thanks for your reply. I have verified again the asset(images), the image I'm trying to add is not part of the page and I'm still getting an error.

We're using AEM 6.5. I'm sure that the asset is not referenced in the page. I'm adding the multiple assets using the below option(Add Content).  

Hello team, we have a custom workflow in which we are trying to add some assets to the payload, and we are getting this error even though the assets are not referenced in the pages. (For example, if page-a.html is added to the workflow and we try to add the image test.jpg, we are getting this error ...

Just checking if you were able to address the issue? If so, can you share the details?

Just checking if you were able to fix the issue? If so, can you share the details?@Vijayalakshmi_S @BalvinderKalra 

Thanks for your reply. Looks like the clientlib is not getting executed in modal popup window.

Thanks for your reply. Actually, on the "/aem/inbox" page, the code hits the breakpoint in JS, but not when I open the "Complete Work Item" window/modal popup. Should I need to try differently?