Hi Dinesh,
The error means that the content server detrtificate files are not found.
These files (<repository_name>.cert and <repository_name>.pse) should be in the
content server directory in securiry subdirectory.
You should define the correct path for content server, so that these files are found and the
directory should ave access right "full control" for everyone.
It is also an alternative to redo these files by creating a certificat and distributing them, see note 777229 for necessary steps.
Regards, Péter