Good afternoon.  The error that you have provided can be caused by a number of different things.  I would need more information such as:

Is the DDB online?

Do you have any mount paths offline or out of space?

are there other jobs running for this client?

@Sunnytcs , can you confirm the current status of the job?  As @Orazan said, there’s several causes for streams to be unavailable.  the most common is that you simply have too many jobs running (and using those streams) so the job in question has to wait its turn.

Generally, these jobs will run in their own due time.