What's wrong with this code (so confusing

Question

In this code, there are 210 inputs and 210 td (inside table).

There first 10 inputs are for something different (for names).
And the 200 are for score keeping.

Now find the very bottom right Input, and type a number In It > press " update". You'l find the number u entered _ In the "score" row << Scroll all the way to the right on the "score".
So the number adds up and prints In the score row.
Issue: When you click "Done" first, then press update, there is undefine object error.
Why / how to fix that?
https://code.sololearn.com/WShYa2MbsX7l/?ref=app

Answer 1

Benedict ya. if you click "done" the error changes (54).

Answer 2

it is at line 76

Answer 3

oh, maybe a glitch