done in 6.5 SP10

AEM does not automatically sync the users until the users try to login to AEM then at that point the sync will happen for that specific user

Are you trying with admin user?

Depends on which component on your page is asking for this. If you're unsure, try deleting all components on a local system and see if the prompt goes away after a specific component is deleted.It could also be because of something in your Analytics/Target code. You can find out by removing the clou...

Does the outputcache directory exist? or was it deleted? If it was deleted, created it manually and try again.

This is an open enhancement item with Adobe engineering. Please log a Daycare ticket and reference enhancement CQ-4271480 so that your company details can be associated with this enhancement request.

What kind of session do you mean? Is it an AEM user session? If so, this is going to depend on how your React app is integrated with AEM. Is it being served by AEM ? If so, it should be able to access the session easily since the browser holds the session.

ServiceReference sr = bundleContext.getServiceReference(YourService.class.getName());

Try searching with user name instead of first name / last name ?

You can use this URL which relies on the query builder APIhttp://localhost:4502/bin/querybuilder.json?p.limit=-1&type=dam%3aAsset