IOS错误，键盘不显示

我们在 IOS 中遇到了一个问题，我们测试了来自https://pub.dev/ 的许多 webview 包（例如https://pub.dev/packages/webview_flutter和https://pub.dev/packages/flutter_webview_plugin和https： //pub.dev/packages/flutter_inappbrowser ) 并且所有解决方案都以相同的结果结束。当 innapp 网站打开时，它完美加载，但是当您与输入交互时，键盘似乎没有出现，它出现在所有页面的所有输入中。

提前致谢！。

错误日志输出是：

 Probably at least one of the constraints in the following list is one you don't want. 
Try this:
(1) look at each constraint and try to figure out which you don't expect; 
(2) find the code that added the unwanted constraint or constraints and fix it.

(Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
   "<NSAutoresizingMaskLayoutConstraint:0x6040004826c0 h=-&- v=-&- UIToolbar:0x7fcec747c950.width == _UIInputViewContent:0x7fcec74aede0.width   (active)>", 
   "<NSAutoresizingMaskLayoutConstraint:0x600000487440 h=--& v=--& _UIInputViewContent:0x7fcec74aede0.width == 0   (active)>", 
   "<NSLayoutConstraint:0x6000004839d0 H:|-(0)-[_UIButtonBarStackView:0x7fcec74bfd40]   (active, names: '|':_UIToolbarContentView:0x7fcec743d460 )>", 
   "<NSLayoutConstraint:0x600000483a70 _UIButtonBarStackView:0x7fcec74bfd40.trailing == _UIToolbarContentView:0x7fcec743d460.trailing + 8   (active)>",
   "<NSLayoutConstraint:0x6000004845b0 _UIToolbarContentView:0x7fcec743d460.trailing == UIToolbar:0x7fcec747c950.trailing   (active)>",  
   "<NSLayoutConstraint:0x60000009f1d0 H:|-(0)-[_UIToolbarContentView:0x7fcec743d460]   (active, names: '|':UIToolbar:0x7fcec747c950 )>",
   "<NSLayoutConstraint:0x604000480730 H:|-(>=5)-[_UIModernBarButton:0x7fcec75b34b0]   (active, names: '|':_UIButtonBarButton:0x7fcec75b2e40 )>",   
   "<NSLayoutConstraint:0x604000480780 H:[_UIModernBarButton:0x7fcec75b34b0]-(>=5)-|   (active, names: '|':_UIButtonBarButton:0x7fcec75b2e40 )>", 
   "<NSLayoutConstraint:0x604000481310 H:|-(8)-[_UIModernBarButton:0x7fcec75b4060'Done']   (active, names: '|':_UIButtonBarButton:0x7fcec75b39d0 )>", 
   "<NSLayoutConstraint:0x604000481360 H:[_UIModernBarButton:0x7fcec75b4060'Done']-(0)-|   (active, names: '|':_UIButtonBarButton:0x7fcec75b39d0 )>",