Nested for, while, and do while loop returns blank white in output, why? JavaScript

Question

I wrote a nested loop to test different loops while I learned them, but I encountered a problem that may be a limit of sololears console, can you tell me if its a bug in my code or sololearns problem?
https://code.sololearn.com/W22ox63M8q9n/?ref=app

Answer 1

Bro there are too many errors over there I will Take a look on it later