Joplin cant encrypt files because the locks are gone. is there anything i can do?

i got a weird message on my mobile saying that some of the items could not be decrypted
i assumed it wa syncing issue. but it turned out that both my Dekstop have its "Locks" folder empty.

so i assume it means that as it currently is joplin cannot Decrypt the files becuse it dosen't have the locks. is there anything i can do to save them?

I am using:
Desktop OS: Windows 10 64 bit
Desktop version: 2.11
**
Mobile version: 2.12
Mobile OS: Android 10 OS