Fatal error: Uncaught Error: Class "OCP\Migration\SimpleMigrationStep" not found in /home/.sites/740/site1364/web/cloud/-/apps/twofactor_backupcodes/lib/Migration/Version1002Date20170607104347.php:31
Stack trace:
#0 {main}
  thrown in /home/.sites/740/site1364/web/cloud/-/apps/twofactor_backupcodes/lib/Migration/Version1002Date20170607104347.php on line 31