You get error code 507 while installing Creative Cloud apps when the storage volume for your installed files is either offline or has been removed. The volume is the location in your device where the installed file gets stored by default.
Ensure that the volume in which your application is installed is online and accessible. To do this, follow these steps:
If you don't have access to the drive, uninstall the already installed app and try to install the app again. A manual uninstall can be done using the PowerShell command on Windows: