I seem to randomly get the error "# connection closed by server r:0" while im connected to the miner.

Things seem to go well for about an hour and then I get that error and I have to reboot the miner program. Any ideas?

This is the line im using to start:
--server zhash.pro --port 3057 --user znk4Hw9K8HUoEgpzaX8vRDD1pvcKWqgGzSX.$rigName --pass x

Miner: dstm-v0.5.6

https://imgur.com/a/ZSc2I