Debug functions in Oracle SQL Developer

https://stackoverflow.com/questions/65541172/network-access-denied-at-sys-dbms-debug-jdwp
Get version 20.2 of SQL Developer. In preferences, set debugger mode to DBMS_DEBUG

Set breakpoints. Compile for debug. Click debug and enter parameters. Verify you are calling the correct function or procedure.

ORA-06508: PL/SQL: could not find program unit being called: 

Check invalid objects:

select
  owner      
 ,object_type
 ,object_name
from dba_objects
where 1=1
and status != 'VALID'
order by owner,object_type, object_name desc
;

Program unit is likely invalid. Recompile.

Connecting to the database wsuir TEST1.
Debugger attempting to connect to database.
Executing PL/SQL: DECLARE
                   id VARCHAR2( 30 );
                 BEGIN
                   id := DBMS_DEBUG.initialize( '130.108.39.168:1718383716533', 0 );
                   DBMS_DEBUG.debug_on( TRUE );
                 END;
Debugger connected to database.
Source breakpoint: T_CURRIC.pls:283