When I open the wallet, it is showing "No block source found". any suggestion, please?
Add below lines to your wallet configuration file and then restart your wallet
addnode=185.174.102.17
addnode=104.250.138.209
addnode=104.193.252.152
addnode=217.147.172.14
addnode=5.135.104.65
addnode=5.9.253.139
addnode=185.174.103.67