2020-12-27 07:04:38.297	[P2P9]	WARNING	blockchain.db.lmdb	src/blockchain_db/lmdb/db_lmdb.cpp:82	Failed to query m_blocks: MDB_BAD_TXN: Transaction must abort, has a child, or is invalid
2020-12-27 07:04:38.297	[P2P9]	WARNING	blockchain.db.lmdb	src/blockchain_db/lmdb/db_lmdb.cpp:82	Failed to query m_blocks: MDB_BAD_TXN: Transaction must abort, has a child, or is invalid
2020-12-27 07:04:38.298	[P2P9]	ERROR	blockchain	src/cryptonote_core/blockchain.cpp:4533	Exception at [add_new_block], what=Failed to query m_blocks: MDB_BAD_TXN: Transaction must abort, has a child, or is invalid
2020-12-27 07:04:38.301	[P2P9]	WARNING	blockchain.db.lmdb	src/blockchain_db/lmdb/db_lmdb.cpp:82	Failed to commit a transaction to the db: MDB_BAD_TXN: Transaction must abort, has a child, or is invalid
2020-12-27 07:04:38.301	[P2P9]	ERROR	blockchain	src/cryptonote_core/blockchain.cpp:4664	Exception in cleanup_handle_incoming_blocks: Failed to commit a transaction to the db: MDB_BAD_TXN: Transaction must abort, has a child, or is invalid