Little question, yesterday I could mine normally ..
but today, in my log I see that:
2017-Jul-19 12:44:36.342516 DEBUG [MinerManager] Requested block template with previous block hash: 3443160bd4653f3feae973c825700fa2f8fae5688dfcd5c7423ec459fa73b54c
2017-Jul-19 12:44:36.342704 DEBUG [MinerManager] waiting for event
2017-Jul-19 12:44:36.342787 DEBUG [BlockchainMonitor] Waiting for blockchain updates
2017-Jul-19 12:44:36.342859 DEBUG [BlockchainMonitor] Requesting last block hash
2017-Jul-19 12:44:36.343026 INFO [Miner] Starting mining for difficulty 7509833
2017-Jul-19 12:44:36.343418 DEBUG [BlockchainMonitor] Last block hash: 3443160bd4653f3feae973c825700fa2f8fae5688dfcd5c7423ec459fa73b54c
2017-Jul-19 12:45:06.343584 DEBUG [BlockchainMonitor] Requesting last block hash
2017-Jul-19 12:45:06.344870 DEBUG [BlockchainMonitor] Last block hash: 3443160bd4653f3feae973c825700fa2f8fae5688dfcd5c7423ec459fa73b54c
2017-Jul-19 12:45:36.345151 DEBUG [BlockchainMonitor] Requesting last block hash
2017-Jul-19 12:45:36.346384 DEBUG [BlockchainMonitor] Last block hash: ae0b7c30970dd363e9e2bc52ea268ed2f0d20f4a08dc86cf17b334353bbc229f
2017-Jul-19 12:45:36.346550 DEBUG [BlockchainMonitor] Blockchain has been updated
2017-Jul-19 12:45:36.346711 DEBUG [MinerManager] got BLOCKCHAIN_UPDATED event
2017-Jul-19 12:45:36.355617 DEBUG [Miner] Mining has been stopped
2017-Jul-19 12:45:36.355781 DEBUG [BlockchainMonitor] Sending stop signal to blockchain monitor
Do you know why it receives a stop signal ?