Fix multiple errors in the error pop-ups

[vrom911]

I am not sure what was the intention of having multiple similar patterns, perhabs that is important. However, after changing that, now I only see 1 error in the pop-up window:

@jonaprieto Let me know if you know the cases, in which these rules were important, so I can test with that too!

• Resolves The pop-up window for errors doesn't contain proper error message #80

[jonaprieto]

Let me know if you know the cases, in which these rules were important, so I can test with that too!

As far as I remember those patterns were necessary to show the complete error message.
Perhaps, try with a bigger error message like the one given for cycle dependency in module imports.

[jonaprieto]

Yes, just try adding a cycle dependency and you'll see that the error popup is not right.