Storage Locations Unavailable & Permission Denied
I've been editing all day quite happily on my M1 MacBook Air. My FCP library is on an external Sabrent SSD.
When I came back from a break, I kept getting the error message 'FCP cannot save changes to [my project]. The storage location for one or more libraries is no longer available. The libraries will be closed so that no work is lost.'
The library had originally been on a different drive, but I made sure I had opened it from the Sabrent, and disconnected the other drive.
I restarted the MBA, but got the same error message. I then was not able to open the project at all, getting a second error message that said 'The operation couldn't be completed. Permission denied. [Project title] is already in use by [my user name] on '[my MacBook Air].local.'
I don't know what to do next. Any advice would be greatly appreciated. Thanks!
MacBook Air 13″, macOS 11.3