Why is my Run button is spinning endlessly and not passing the exercise?

I pressed the Run button and it just shows a wheel spinning endlessly. Why is it not running my code?

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If this happens, please try the following if you haven’t already:

  1. Use Chrome, it’s typically the most reliable browser

  2. Clear your browser cache and press ctrl + f5 (cmd + shift + r on Mac) to do a hard refresh

These are just two common fixes, but if they don’t work, check out our official troubleshooting guide.


If this will happen , try to make a error in code and then replace it with the solution.
Worked for me , clearing cache did nothing .

This is most likely due to the fact that your internet speed is low. It might also happen if you give give too much to process. For example generating 1 billion random figures. Hope this helps!