2019-06-18 15:36:03.972     7efff94a7780        WARN    blockchain.db.lmdb      src/blockchain_db/lmdb/db_lmdb.cpp:1358 Existing lmdb database was made by a later version (5). We      don't know how it will change yet.
2019-06-18 15:36:03.972     7efff94a7780        FATAL   blockchain.db.lmdb      src/blockchain_db/lmdb/db_lmdb.cpp:1388 Existing lmdb database is incompatible with this version.
2019-06-18 15:36:03.972     7efff94a7780        FATAL   blockchain.db.lmdb      src/blockchain_db/lmdb/db_lmdb.cpp:1389 Please delete the existing database and resync.