Unknown Error for Custom Column

I'm trying to create a code that detects if a row in a column is blank; however, I didn't expect it to be this hard since this is really easy on excel. Can someone help me with this I don't know what I'm doing wrong.....

My code keeps on having this issue:
"Expected comma but found '('"

My existing code:
case(isnull([Description]), "True", "False")

Hi @Milles
Post "Diagnostic Info" from Admin > Troubleshooting.
It looks correct. Try posting a screenshot, so it's easier to see where you are getting the error.

@Milles Either it is caused by your browser extension (I guess it's a password manager) or it is caused by some older version of Metabase, latest release is 0.43.1
https://github.com/metabase/metabase/releases/latest