Comments of chapter undefined of Marvel's Hogwarts Wizard

This is also a wrong chapter. The right one is Chapter 528: Return to the Main World

520 Save Makarov (no chapter) ;521 Fairy Law (c.521) ;522 Successor (c.522) ;523 The Best Candidate (c.524) ;524 Makarov's Request (c.525) ;525 Fairy Tail Chamber of Secret (c.520) ;526 Three Great Fairy Magics (no chapter) ;527 Return to the Main World (no chapter) ;528 Aisha's Partner (c.523) ;529 I Have a Brother (c.526) ;530 Embarassing Scene (c.527) ;531 Quitening Charm (c.528) ;532 I'll be the Supervisor (c.529)

Thanks for the chapter on a good story.