1. In the process of thesis defense, you should communicate with your tutor in time to let your tutor know your general situation.

2. Give the thesis to the tutor before the defense, and then take the initiative to call the tutor.

If there is no tutor, you should write the paper well.

Does anyone else have too many things in the newspaper? Like where did it come from?

Finally, it is possible that your paper is too simplistic and the teacher thinks it is meaningless.