AC-50480: Internal error occurred

AC-50480: Internal error occurred: java.lang.Exception: Error while generating listener.ora
SOLUTION:
AC-50480: Internal error occurred: java.lang.Exception: Error while generating listener.ora. [ID 1324667.1]
To implement the solution, please execute the following steps:
[edsanimate_start entry_animation_type= “fadeIn” entry_delay= “0” entry_duration= “1” entry_timing= “linear” exit_animation_type= “” exit_delay= “” exit_duration= “” exit_timing= “” animation_repeat= “infinite” keep= “yes” animate_on= “load” scroll_offset= “” custom_css_class= “”]NOTE: Ensure that you have taken a backup of your system before applying the recommended solution.[edsanimate_end]
1. Clean the Data Topology Model
Sqlplus apps/…
SQL> EXEC FND_CONC_CLONE.SETUP_CLEAN;
COMMIT;
EXIT;
2. Run AutoConfig on all tiers, firstly on the DB tier and then the APPS tiers, to repopulate the required system tables