error in IOS about buttoncircleplugin

[wilsonvargas]

Have you tried to add a key to your Info.plist file? If you have not done that add this key to the file like this:

<key>UIAppFonts</key>
    <array>
      <string>MaterialIcons-Regular.ttf</string>
    </array>

[jd-alexander]

Got an error similar to this on iOS. had to remove the library.

System.ArgumentNullException: Value cannot be null.
Parameter name: value
at UIKit.UIButton.set_Font (UIKit.UIFont value) [0x00011] in /Users/builder/data/lanes/5665/6857dfcc/source/xamarin-macios/src/build/ios/native/UIKit/UIButton.g.cs:759
at ButtonCircle.FormsPlugin.iOS.ButtonCircleRenderer.OnElementChanged (Xamarin.Forms.Platform.iOS.ElementChangedEventArgs1[TElement] e) [0x00091] in <019ef9ea9d5345738e9a61978d0e1f83>:0 at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].SetElement (TElement element) [0x00110] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementRenderer.cs:167
at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].Xamarin.Forms.Platform.iOS.IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x00000] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementRenderer.cs:116 at Xamarin.Forms.Platform.iOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x0001b] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Platform.cs:192 at Xamarin.Forms.Platform.iOS.VisualElementPackager.OnChildAdded (Xamarin.Forms.VisualElement view) [0x00009] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:63 at Xamarin.Forms.Platform.iOS.VisualElementPackager.Load () [0x0001e] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:36 at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].SetElement (TElement element) [0x000cc] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementRenderer.cs:155
at Xamarin.Forms.Platform.iOS.VisualElementRenderer1[TElement].Xamarin.Forms.Platform.iOS.IVisualElementRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x00000] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementRenderer.cs:116 at Xamarin.Forms.Platform.iOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x0001b] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Platform.cs:192 at Xamarin.Forms.Platform.iOS.VisualElementPackager.OnChildAdded (Xamarin.Forms.VisualElement view) [0x00009] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:63 at Xamarin.Forms.Platform.iOS.VisualElementPackager.Load () [0x0001e] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\VisualElementPackager.cs:36 at Xamarin.Forms.Platform.iOS.PageRenderer.ViewDidLoad () [0x00086] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Renderers\PageRenderer.cs:105 at at (wrapper managed-to-native) ObjCRuntime.Messaging:IntPtr_objc_msgSendSuper (intptr,intptr) at UIKit.UIViewController.get_View () [0x00030] in /Users/builder/data/lanes/5665/6857dfcc/source/xamarin-macios/src/build/ios/native/UIKit/UIViewController.g.cs:2983 at Xamarin.Forms.Platform.iOS.PageRenderer.get_NativeView () [0x00000] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Renderers\PageRenderer.cs:40 at Xamarin.Forms.Platform.iOS.PageRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x0004f] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Renderers\PageRenderer.cs:55 at Xamarin.Forms.Platform.iOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x0001b] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Platform.cs:192 at Xamarin.Forms.Platform.iOS.TabbedRenderer.SetupPage (Xamarin.Forms.Page page, System.Int32 index) [0x0000a] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Renderers\TabbedRenderer.cs:284 at Xamarin.Forms.Platform.iOS.TabbedRenderer.Reset () [0x0001c] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Renderers\TabbedRenderer.cs:261 at Xamarin.Forms.Internals.NotifyCollectionChangedEventArgsExtensions.Apply (System.Collections.Specialized.NotifyCollectionChangedEventArgs self, System.Action3[T1,T2,T3] insert, System.Action`2[T1,T2] removeAt, System.Action reset) [0x001e1] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Core\Internals\NotifyCollectionChangedEventArgsExtensions.cs:77
at Xamarin.Forms.Platform.iOS.TabbedRenderer.OnPagesChanged (System.Object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e) [0x00000] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Renderers\TabbedRenderer.cs:199
at Xamarin.Forms.Platform.iOS.TabbedRenderer.SetElement (Xamarin.Forms.VisualElement element) [0x0005b] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Renderers\TabbedRenderer.cs:66
at Xamarin.Forms.Platform.iOS.Platform.CreateRenderer (Xamarin.Forms.VisualElement element) [0x0001b] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Platform.cs:192
at Xamarin.Forms.Platform.iOS.NavigationRenderer.CreateViewControllerForPage (Xamarin.Forms.Page page) [0x00021] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Renderers\NavigationRenderer.cs:340
at Xamarin.Forms.Platform.iOS.NavigationRenderer+d__44.MoveNext () [0x0000a] in C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Renderers\NavigationRenderer.cs:327