Quit Script under these conditions leaving screen with no remnants of it or warnings

Now get this with wrong password:

From an earlier script of yours,

removing this line seems to fix the issue and seems to work fine:

on error number -60005

yielding this:

tell application "Finder"

if not (exists disk "TEST") then

display dialog "A password is required." default answer "" giving up after 20 with hidden answer

try

if not (gave up of the result) and text returned of the result is not "" then do shell script "diskutil apfs unlockvolume UUID-passphrase " & text returned of the result

end try

end if

end tell

Probably my error but volume would not mount with correct password and UUID

tell application "Finder"

if not (exists disk "TEST") then

display dialog "A password is required." default answer "" giving up after 20 with hidden answer

try

if not (gave up of the result) and text returned of the result is not "" then "diskutil apfs unlockvolume UUID  -passphrase " & text returned of the result

on error number -60005

end try

end if

end tell

How to incorporate this into your original script?

It mounts now but with incorrect password I get this rather than quitting:

removing this line seems to fix the issue:

on error number -60005

Could not compile this, got the following after entering UUID:

I think the sequencing of the if and try is correct since it goes:

if

try

end try

end if

Seems to be nested appropriately.

Switching the 2 as you suggested throws off the same Syntax Error.