I don`t know what to do anymore everytime is same mistake on block 254837

trying connection 5.146.249.217:2828 lastseen=10.9hrs
ERROR: AddToBlockIndex() : Rejected by stake modifier checkpoint height=254838, modifier=0xbbb66c4098c49e9b
ERROR: AcceptBlock() : AddToBlockIndex failed
ERROR: ProcessBlock() : AcceptBlock FAILED
connection timeout
trying connection 91.48.44.28:2828 lastseen=46.5hrs
connection timeout
trying connection 5.146.249.217:2828 lastseen=10.9hrs
connection timeout
trying connection 23.232.193.3:2828 lastseen=162.7hrs