Butterflies Solution Expection:WindowsError


I was wondering if anyone knows the reason to why Butterfly gives out the error message ‘Solution Expection:WindowsError’?

I have had a look at others examples as the line of code always seem to be different as well.

There was a possible solution, but I’ve never used Python before and the instruction are not very clear to me, I did try with my limited understanding, but it didn’t work.