After install APEX 5.0.3 to DB version 12.2.0.1.0 and ORDS 3.0.5.124.10.54 the all was success but I login with the user admin I found the error below and stuck in this error.
How to fix it ?

Error during rendering of page item P3_ACCESSIBILITY_MODE.
ORA-06508: PL/SQL: could not find program unit being called