White screen after a lesson.

Question

So, i completed a lesson "Standards and Best Practices" in the "introduction to Python" course, got my XP and points and everything, only to be greeted with white screen of nothingness. It didn't send me back to the course, it didn't start a new lesson or practice, nothing. Just white screen with only my cursor on it. Refreshing the page did nothing. I had to close the tab and open Sololearn link again in order to see the course; thankfully, the progress was saved.
I'm on PC, accessing Sololearn through Opera GX.
Edit: it just happened again. I tried turning the adblocker off, it didn't make a difference.

Answer 1

did you try it with another browser?

I had a problem when I switched my browser: about every 10-15 minutes I had to log back in. and after that I found the solution (what to change inside the settings, and where it is located in the settings)

Answer 2

Mihaly Nyilas no, Opera GX is the only browser i use. It's also the first time this ever happened, in any course.

Answer 3

I tried it again from the app, and it works properly.
if you try to re-solve that one, will you face the same thing?

Answer 4

Mihaly Nyilas i have just re-ran the lesson on both phone and on PC. It worked smoothly in both cases, with the addition of one ad on the phone.

Answer 5

then possible opera's built-in adblocker coused the problem

Answer 6

Mihaly Nyilas might be. It's strange, however, that it happened only once.