Error loading blockchain db

[a20180502]

Error loading blockchain db: Error attempting to retrieve a hard fork version at height 1680000 from the db: MDB_NOTFOUND: No matching key/data pair found -- shutting down now
after
sudo -u monerodaemon /usr/local/src/monero/build/release/bin/monero-blockchain-import --input-file $BLOCKCHAIN_DOWNLOAD_DIR/blockchain.raw --batch-size 20000 --database lmdb#fastest --verify off --data-dir /home/monerodaemon/.bitmonero

[0x1100010010]

No need for that, just install monero following the instruction. Executed monerod --detach, it will start blockchain sync automatically. Verify syncing progress by tail -f .bitmonero/bitmonero.log.