The message is saying that the semi-colon was encountered where one wasn’t expected. It goes on to say that CASE should be the token that would be after END under the circumstances.
I suspect that the full source member is not actually a CREATE PROCEDURE operation. If it’s instead a basic SQL statement, then it’s not a “procedure” at all. It’s just a statement (or series of statements delimited by “;”) to be executed.
If you are attempting to create a stored procedure with a CREATE PROCEDURE statement, then it would also be possible to have a BEGIN/END block where the END statement could be followed by the label of the BEGIN statement.
Nornally, if there is no BEGIN statement used in a stored procedure, there is no use for an END statement.