Swift error : signal SIGABRT how to solve it

You get a SIGABRT error whenever you have a disconnected outlet. Click on your view controller in the storyboard and go to connections in the side panel (the arrow symbol). See if you have an extra outlet there, a duplicate, or an extra one that's not connected. If it's not that then maybe you haven't connected your outlets to your code correctly.

Just remember that SIGABRT happens when you are trying to call an outlet (button, view, textfield, etc) that isn't there.

For me it wasn't an outlet. I solved the problem by going to the error And reading what it said. (Also Noob..)

This was the error:

And The solution was here:

Just scroll up in the output and the error will be revealed.