Can someone help me please , my chaincoin.conf is :

rpcuser=xxxxxxx
rpcpassword=xxxxxx
rpcallowip=127.0.0.1
server=1
daemon=1
logtimestamps=1
maxconnection=256
externalip=X.X.X.X
mnconflock=0
listen=1
masternode=1
masternodeprivkey=XXXXXXX


And my masternode don't work cause of sentinel error ...... what i had to do for this working