Help:I cannot subscription report

Dear all

I cannot subscription report when I finished setup that the following is the error message

An internal error occurred on the report server. See the error log for more details. (rsInternalError) Get Online Help The specified @.category_id ('101') does not exist.

The SQL agent have already start. I don't know what happen.

Can you look in the SSRS Logs and Event logs and grab some relevant information for us to digest?|||

I have already checked the log but it have any log for it.

How can I do?