Can't enable JavaScript MLE on APEX - oracle

Question

I am running Oracle APEX 21.1 (build 21.1.3.r1531102) on the 21c express database and for some reason I cannot execute server side code with the JavaScript MLE option.
In the develpment environment it does not show the option at all.
In the SQL commands screen I can only execute pure sql or PL/SQL. If I try to execute the following example
SET SERVEROUTPUT ON;
DECLARE
ctx dbms_mle.context_handle_t;
user_code clob := q'~
console.log('Hello World!');
~';
BEGIN
ctx := dbms_mle.create_context();
dbms_mle.eval(ctx, 'JAVASCRIPT', user_code);
dbms_mle.drop_context(ctx);
EXCEPTION
WHEN others THEN
dbms_mle.drop_context(ctx);
RAISE;
END;
I get the following message:
ORA-00922: missing or invalid option
ORA-06512: at "SYS.WWV_DBMS_SQL_APEX_210100", line 673
ORA-06512: at "SYS.DBMS_SYS_SQL", line 1703
ORA-06512: at "SYS.WWV_DBMS_SQL_APEX_210100", line 659
ORA-06512: at "APEX_210100.WWV_FLOW_DYNAMIC_EXEC", line 1854

Answer 1

A few weeks ago we solved this and I forgot to update this question.
After some work we found out that user needed to be granted access to MLE. I was not that one who fixed, but I've asked the code to post here, check below:
GRANT MLE JAVA
GRANT EXECUTE DYNAMIC MLE to XYZ;
GRANT EXECUTE ON JAVASCRIPT TO XYZ;

Answer 2

Remove the first line or comment this out, I suppose this is for on premise DB version support but not allowed in ADB.