ERROR OGG-01668 Oracle GoldenGate Manager for Oracle, mgr.prm: PROCESS ABENDING.

PROBLEM:
mgr process can not start. "ERROR   OGG-01668  Oracle GoldenGate Manager for Oracle, mgr.prm:  PROCESS ABENDING" appears in ggserr.log. "ERROR   OGG-01091  Oracle GoldenGate Manager for Oracle, mgr.prm:  Unable to open file "/app/oracle/gg/bin/dirrpt/MGR.rpt" (error 2, No such file or directory)." appears in ggserr.log.

CAUSE:
subdirectory is not created.

SOLUTION:
create subdirectories.