DateTimeDiff not an available function

Hello, in my version of Metabase, the DateTimeDiff function is not listed as an available function.
When I try to use it, I get the error: Error Redundant input, expecting EOF. I'm just an end user, not the admin, so I don't know if it's an issue of rights or if it has something to do with the type of database we have. If for some reason I cannot use that function, can I use SQL to write it?

Which is your version?

version v0.41.5