invalid page in block

Hi.

Today slave exited with error

===========>16008 2016-02-14 02:42:53 EET XX001 [11-1]FATAL: invalid
page in block 35921 of relation base/69823/12792

===========>16008 2016-02-14 02:42:53 EET XX001 [12-1]CONTEXT: xlog redo
vacuum: rel 1663/69823/12792; blk 73837, lastBlockVacuumed 7360

===========>16005 2016-02-14 02:42:55 EET 00000 [4-1]LOG: startup
process (PID 16008) exited with exit code 1

===========>16005 2016-02-14 02:42:55 EET 00000 [5-1]LOG: terminating
any other active server processes

===========>31144 2016-02-14 08:54:04 EET 00000 [1-1]LOG: database
system was interrupted while in recovery at log time 2016-02-14 02:03:17 EET

===========>31144 2016-02-14 08:54:04 EET 00000 [2-1]HINT: If this has
occurred more than once some data might be corrupted and you might need to
choose an earlier recovery target.

What should i do?

From the message i see that is somehow connected with vacuum process?

I've added the zero_damaged_pages = on to conf, then started service.

For now replica is working with no errors.

Thanks!