Hello, if the tutor thinks you are unqualified and does not sign, then you will definitely not be able to participate in the thesis defense. After all, colleges and universities now have a tutor system, and the tutor is your first responsibility, so the tutor You have the absolute right. If what you say is not up to standard, hurry up and revise it. If it is not finished, your graduation will be postponed. So hurry up and stop worrying about this issue.