The following is a possible way to politely ask the leader if he can make up the overdue papers:

Leaders:

I want to apologize to you here, because the paper I submitted before was not completed on time for some reasons. I have started to finish my thesis again, and I will submit the final manuscript as soon as possible.

Before that, I want to ask if you can allow me to submit this overdue paper. Please let me know if you need any help or further information.

I apologize again and thank you for your understanding and support.

I am here to convey

welcome