[shutter] solve failed assertion: line 5142 POS 12: '_ debugLocked‘: is not true.

Flutter Day four , An error is reported in the jump , That's true ：Failed assertion: line 4653 pos 12: ‘!_debugLocked’: is not true.
This error report is really disgusting to me , Read relevant errors , This one is wrong , It has nothing to do with what I modified and successfully ran correctly

Until I saw this , Things have finally turned for the better

The reason why in this official dart File error , Maybe one of the following ：
1、 The current layout is not loaded
2、Navigator If the jump action of is not completed, directly execute the new jump task

My solution to this problem is to add a delay to the jump method

Future.delayed(Duration(milliseconds: 500),(){
	Navigator.of(buildContext).pushAndRemoveUntil(MaterialPageRoute(builder: (context) => BottomNavigation()), (route) => false);
});

Reference resources ：
1、Flutter Failed assertion: line 4830 pos 12: ‘＜optimized out＞‘: is not true.
2、Flutter Failed assertion: line 4830 pos 12: ‘＜optimized out＞‘: is not true.