This issue was generated for ORDS purposes. So, the solution of the 503 Error is restore the ORDS.
Installed ORDS path go to cmd
Uninstall
Install
Restore the TomCat Server
503 Error Solution in Oracle Apex
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This issue was generated for ORDS purposes. So, the solution of the 503 Error is restore the ORDS.
Installed ORDS path go to cmd
Uninstall
Install
Restore the TomCat Server