Router / Navigation Problem
It’s going to be hard to help you out without any info on your problem there 
Done there is a text file where my code is in and thank you very much for the quick response really appreciate it!
Can you also specify what your problem is?
The idea was, once the button has been clicked it would open up the signup page, but when clicked with the local preview it would give me an error message saying unable to navigate to route: SignupScreen.
The path is determined by the template name, not the class.
In other words, you’ll want to goto “signup” (which is the template name you’ve given the SignupScreen).
You can find more docs on navigation here
Thank you so much can’t believe it worked 