Whats wrong with tester_vis​ualisering​sapp?

What is wrong with tester_visualiseringsapp?

I have attached two big functions and many small functions that merely are there so that tester_app_3 can run. There is nothing wrong with these functions

The problem: When I run tester_app2 which then leads to tester_app_3 that uses tester_visualiseringsapp and push plot results button, I firstly get a plot after 2 min and that’s without the right scale for yaxis ; I want it to have an increment of 500 with values written on it that is what I thought I had coded it for. Then a get a second plot don’t know why and that plot is blank