I like the miner but it crash on my every time after the dev fee

2018.06.19:20:50:52.316: eths Eth: Received: {"id":6,"jsonrpc":"2.0","result":true}
2018.06.19:20:50:56.320: main Eth speed: 50.146 MH/s, shares: 9/0/0, time: 0:19
2018.06.19:20:50:59.332: main DevFee: Disconnected and stopped
2018.06.19:20:50:59.847: GPU1 GPU1: Starting up... (0)

Any hints?