several times, my witeness node blocked at some block
I watch the p2p log, it received block 419543, then 419544, then missed 419545, then received 419546, .......
and it will never receive block 419545, I have to restart witness node, then it can request the block from other node.
I think we need a logic, when the witness node have missed a block more than 10 blocks, it should request from other node.