taskbar settings

I can't enter the task bar settings on windows 10 no matter what I do, I can right click on it and open the task bar settings but it gives me an error which is linked below. I also tried to open my settings but when I tried to go the task bar section it just closes. View...

Since I started using Amazon Music(desktop Program / APP), I noticed here: Windows 10. -right click desktop -Personalize -taskbar -scroll down to "Notification area" -Click "Select which i cons appear on taskbar" Under here is where it's showing 20-30 Duplicates of "Amazon Music" - I'm not...