Oracle Message ORA-48173 - error checking directory existence during ADR initialization [string]

ERRORerror checking directory existence during ADR initialization [string]
CAUSEError encountered when checking directory existence during the initialization of the ADR subsystem. Either the diag or product type directory does not exist underneath the ADR base.
ACTIONThe directory in the error message must exist in order for ADR initialization to succeed. Make sure the directories exist.