Miner keeps exiting. How can I fix this? Thanks.

2021-05-20T03:34:05Z CreateNewBlock(): block weight: 852 txs: 0 fees: 0 sigops 400
2021-05-20T03:34:12Z Loading addresses from DNS seed 159.89.188.140:2313
2021-05-20T03:34:12Z 0 addresses found from DNS seeds
2021-05-20T03:34:12Z dnsseed thread exit