Thesis defense, but what should I do?
The key depends on the school, strictly speaking, it is the second time. If there is no big problem with the paper, it will generally pass, otherwise it will be in trouble, and it will take a year. If it is not strict, it will be more or less convenient for you to find your own tutor and ask him to contact the school Committee. Also, you should finish the paper yourself, because you have more things, so you won't be afraid to ask questions.