Mine_block - Error setting txhashset root to build a block

Tech Support
1

I’m trying to mine grin. Notice this in my logs, not the first time I’ve seen this, have I configured something incorrectly that’s causing this?

ERROR grin_servers::mining::mine_block - Error setting txhashset root to build a block: Error { inner:

TxHashSetErr: output pmmr hash mismatch }
20191230 19:55:02.378 ERROR grin_servers::mining::mine_block - Chain Error: Other Error: Error { inner:

TxHashSetErr: output pmmr hash mismatch }
Cause: Unknown
Backtrace:

2

Notice this in my logs today. Any ides what caused this?

20200106 22:45:22.175 ERROR grin_servers::mining::mine_block - Error setting txhashset root to build a block: Error { inner:

Already Spent: Commitment(083294c91ac9a0583da680f77df499faa2367654eae41587d13e95480fca5821d1) }
20200106 22:45:22.175 ERROR grin_servers::mining::mine_block - Chain Error: Other Error: Error { inner:

Already Spent: Commitment(083294c91ac9a0583da680f77df499faa2367654eae41587d13e95480fca5821d1) }
Cause: Unknown
Backtrace: