xamarin forms i have added searchview toolkit. it's debugging with no error. on the simualtor it's giving error. SearchView is showing dropdown right after dropdown it's giving this error.
There's really not much context to go on here, wrt what code you're running, how you set up searchview etc. Do you have a reproducer sample to share?
Also could you share what it says next to the purple "StackTrace" part, that seem to start with "at Xamarin.Forms.Platform.iOS.", and share the full text in that field? That might give a better indication of where it went wrong and where.