Error whilst running "save altered" during Steup XOR Lab After loading and2_1 cell, I tried to run "save altered", but I got the error as shown in the image. I tried "save altered2" but that also gave the same error. Can anyone please help me debug this error?

"locked by another user" is a file locking issue. You might have the file still open in another layout session. You can override the behavior with the command

locking disable

(assuming the version of magic is recent enough, which is probably is).

Thank you very much