diagnoostics: return empty response if search path dose not exist (#7541)
diagnoostics: return empty response if search path dose not exist (#7541)

Signed-off-by: Fullstop000 <497019a886bbbb3a0069f29f346fb766554ade82@gmail.com>
BusyJay/tikv,pingcap/tikv,pingcap/tikv,c4pt0r/tikv,BusyJay/tikv,BusyJay/tikv,BusyJay/tikv