Errors happen when I click `Check`

An example error

After clicking on the green Check button you may see an error along the bottom of the screen.

Fixing the issue

This issue occurs if the solution did not meet parameters. Parameters are left intentionally vague (as in, they do not check specific lines of code, but instead outcomes) so hopefully this does not happen much.

Please read the error which may help you identify if you missed a part of the solution while following instructions. You can attempt to Check your solution as many times as you would like. New errors are given a new count and are visible on just above previous errors at the bottom of the screen.

If you can't figure out what is missing, feel free to use the Skip link to proceed to the next section.

If you do choose to skip, your code will be edited to meet expectations. Any special customisation outside of what the tutorial has guided you to do will not be retained after you skip.