Bad news for me. Got the following message after watchtower upgraded to 27.1:
2019-12-11T22:53:17.575Z FATAL Unrecoverable error {“error”: “bandwidthdb error: file is not a database”, “errorVerbose”: “bandwidthdb error: file is not a database\n\tstorj.io/storj/storagenode/storagenodedb.(*bandwidthDB).getSummary:153\n\tstorj.io/storj/storagenode/storagenodedb.(*bandwidthDB).Summary:111\n\tstorj.io/storj/storagenode/storagenodedb.(*bandwidthDB).MonthSummary:73\n\tstorj.io/storj/storagenode/monitor.(*Service).usedBandwidth:174\n\tstorj.io/storj/storagenode/monitor.(*Service).Run:83\n\tstorj.io/storj/storagenode.(*Peer).Run.func2:433\n\tgolang.org/x/sync/errgroup.(*Group).Go.func1:57”}