To get more details about the issue, you can change the dispatcher log level to DEBUG and try to access the URL via the dispatcher.

You can reach out to the Sales team at [1] to confirm Also, refer to similar query[2] answered before. [1] https://www.adobe.com/request-consultation/experience-cloud.html [2] https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/aem-developer-license/td-p/316872

Have you tried using the Hide Conditions mentioned at [1] [1] https://docs.adobe.com/content/help/en/experience-manager-65/developing/components/hide-conditions.html

You can follow steps at [1] to configure replication with MSSL [1] https://docs.adobe.com/content/help/en/experience-manager-65/deploying/configuring/mssl-replication.html

Please go through the Sustainable Upgrade docs at [1] [1] https://docs.adobe.com/content/help/en/experience-manager-64/deploying/upgrading/sustainable-upgrades.html

To test if this is related to content disposition,  You can try to clear the CDN cache and disable the "Enable For All Resource Paths" option at "Apache Sling Content-Disposition Filter"

You seem to have an overlay at "apps/cq/gui/components/authoring/editors/core/includeCssLibs" where the nullpointer is observed. Either delete this and recreate this overlay from /libs or try to find which line is throwing nullpointer

Is this AEM FORMS or SITES installation? Do you see any error in the log files when it's failing?

Do you see this Asset in the to be activated list after checking the "Dry Run" checkbox?

You can also look into the cloud manager which provides validation functionality before deploying the code. [1] https://docs.adobe.com/content/help/en/experience-manager-cloud-manager/using/introduction-to-cloud-manager.html