eM Client does not open

Opening eM Client after normal end-of-day shutdown fails. Message reads “The Database Check tool has encountered an error and will exit”. Detail message reads Microsoft.Data.Sqlite.SqliteException (0x80004005): SQLite Error 10: ‘disk I/O error’.
at Microsoft.Data.Sqlite.SqliteException.ThrowExceptionForRC(Int32 rc, sqlite3 db)
at Microsoft.Data.Sqlite.SqliteCommand.PrepareAndEnumerateStatements(Stopwatch timer)+MoveNext()
at Microsoft.Data.Sqlite.SqliteCommand.GetStatements(Stopwatch timer)+MoveNext()
at Microsoft.Data.Sqlite.SqliteDataReader.NextResult()
at Microsoft.Data.Sqlite.SqliteCommand.ExecuteReader(CommandBehavior behavior)
at Microsoft.Data.Sqlite.SqliteCommand.ExecuteNonQuery()
at MailClient.Storage.Data.DataStore.GetConnectionInternal(String relativeName, Boolean privateConnection)
at MailClient.DbRepair.CorruptionChecker.CheckCorruption(RepairOptions repairOptions, CancellationToken token)
at MailClient.DbRepair.CheckingProcess.Check(CancellationToken token)
Data:
databaseFile: eec3a2fb-e07a-46cf-9098-18c3c277f291\b51a934d-a2e7-424a-9254-ca797648a848\folders.dat