Unanswered question

I'm trying to run a PLSQL on a flow that needs it and I'm getting the following error:

ORA-06550: line 1, column 32:
PLS-00103: Encountered the symbol "end-of-file" when expecting one of the following:
:= . ( @ % ;

This occurs either running using native SQL statement action or the PLSQL advanced action. The code I'm trying to run on the query is this one:

BEGIN
udb.handle_udb_import;
END;

This PLSQL runs smoothly in SQL developer and in DBeaver.

Do you know why this could be happening?