Hi Bartłomiej Palka,
Thank you for your patience.
I wanted to inform you that the issue with the "Test your Knowledge" section has been resolved, and everything is now functioning as expected. You can go ahead and complete the module successfully.
If you are still facing any issue, please let us know in the comments and where you are encountering this error along with the screenshot for reference. We are glad to help you.
Please don’t forget to Accept Answer
and Yes
for "was this answer helpful" wherever the information provided helps you, this can be beneficial to other community members.
Thank you.