1: Try to install AEM 6.5 in other folder. Install the necessary service package(6.5.3). Login as admin. Check the Content Fragment models. You should be able to see the folders.2: Install all your project related packages. Now, again check the content fragment models folder. If you are not able to ...

There might be 2 issues.1: Permission : Check are you logging using admin details? If not, check your group permission.2: Custom Index : If your project has any custom oak index, then there might be case that, you cannot view any folder under configuration browser. I have faced the same issue in my ...

Whether your custom java class throws any error ? Looking at the logs, not getting any proper details. Are you calling any sling model, where you expect any data? I mean using @inject method?