Database error

Hello, I have this error in syslog, and my server crashes...
Feb 28 16:41:30 :: Connection closed. (host: 127.0.0.1)
Feb 28 16:41:30 :: ItemIDRange: returned. 10000001 ~ 20000000
Feb 28 16:41:30 :: ItemIDRange: Build: 10000001 ~ 20000000 start:10592668
SYSERR: Feb 28 16:41:30 :: Process: FDWATCH: peer null in event: ident 21

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