Please check if the engine has been initialized!

[dongbingbin77]

flutter boost:3.1.2
flutter :2.0.5
BoostNavigator.push 会报如下错误

2022-09-16 19:19:03.230 32453-32523/com.plateno.botaoota E/flutter: [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: 'package:flutter_boost/src/boost_navigator.dart': Failed assertion: line 73 pos 9: 'appState != null': Please check if the engine has been initialized!
#0 _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:46:39)
#1 _AssertionError._throwNew (dart:core-patch/errors_patch.dart:36:5)
#2 BoostNavigator.push (package:flutter_boost/src/boost_navigator.dart:73:9)
#3 WHNavigator.open (package:wehotel_app/router/wh_navigator.dart:75:38)
#4 _HighLevelTabHomePageState.clickTab (package:wehotel_app/ui/tab_home/high_level_tab_home_page.dart:269:19)
#5 _HighLevelTabHomePageState.build.. (package:wehotel_app/ui/tab_home/high_level_tab_home_page.dart:197:19)
#6 _DemoFlowMenuStateClip._tap (package:wehotel_app/ui/tab_home/high_level_menu_bottom_clip.dart:176:19)
#7 _DemoFlowMenuStateClip.buildTab. (package:wehotel_app/ui/tab_home/high_level_menu_bottom_clip.dart:204:13)
#8 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:182:24)
#9 TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:607:11)
#10 BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:296:5)
#11 BaseTapGestureRecognizer.handlePrimaryPointer (package:flutter/src/gestures/tap.dart:230:7)
#12 PrimaryPointerGestureRecognizer.handleEvent (package:flutter/src/gestures/recognizer.dart:475:9)
#13 PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:93:12)
#14 PointerRouter._dispatchEventToRoutes. (package:flutter/src/gestures/pointer_router.dart:138:9)
#15 _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:397:8)
#16 PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:136:18)
#17 PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:122:7)
#18 GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:381:19)
#19 GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:361:22)
#20 RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:278:11)
#21 GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:316:7)
#22 GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:280:5)
#23 GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:238:7)
#24 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:221:7)
#25 _rootRunUnary (dart:async/zone.dart:1370:13)
#26 _CustomZone.runUnary (dart:async/zone.dart:1265:19)
#27 _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170:7)
#28 _invoke1 (dart:ui/hooks.dart:180:10)
#29 PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:276:7)
#30 _dispatchPointerDataPacket (dart:ui/hooks.dart:96:31)

[0xZOne]

引擎还没有初始化～

[GodJiong]

flutter boost:3.1.2 flutter :2.0.5 BoostNavigator.push 会报如下错误

2022-09-16 19:19:03.230 32453-32523/com.plateno.botaoota E/flutter: [ERROR:flutter/lib/ui/ui_dart_state.cc(186)] Unhandled Exception: 'package:flutter_boost/src/boost_navigator.dart': Failed assertion: line 73 pos 9: 'appState != null': Please check if the engine has been initialized! #0 _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:46:39) #1 _AssertionError._throwNew (dart:core-patch/errors_patch.dart:36:5) #2 BoostNavigator.push (package:flutter_boost/src/boost_navigator.dart:73:9) #3 WHNavigator.open (package:wehotel_app/router/wh_navigator.dart:75:38) #4 _HighLevelTabHomePageState.clickTab (package:wehotel_app/ui/tab_home/high_level_tab_home_page.dart:269:19) #5 _HighLevelTabHomePageState.build.. (package:wehotel_app/ui/tab_home/high_level_tab_home_page.dart:197:19) #6 _DemoFlowMenuStateClip._tap (package:wehotel_app/ui/tab_home/high_level_menu_bottom_clip.dart:176:19) #7 _DemoFlowMenuStateClip.buildTab. (package:wehotel_app/ui/tab_home/high_level_menu_bottom_clip.dart:204:13) #8 GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:182:24) #9 TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:607:11) #10 BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:296:5) #11 BaseTapGestureRecognizer.handlePrimaryPointer (package:flutter/src/gestures/tap.dart:230:7) #12 PrimaryPointerGestureRecognizer.handleEvent (package:flutter/src/gestures/recognizer.dart:475:9) #13 PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:93:12) #14 PointerRouter._dispatchEventToRoutes. (package:flutter/src/gestures/pointer_router.dart:138:9) #15 _LinkedHashMapMixin.forEach (dart:collection-patch/compact_hash.dart:397:8) #16 PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:136:18) #17 PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:122:7) #18 GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:381:19) #19 GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:361:22) #20 RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:278:11) #21 GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:316:7) #22 GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:280:5) #23 GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:238:7) #24 GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:221:7) #25 _rootRunUnary (dart:async/zone.dart:1370:13) #26 _CustomZone.runUnary (dart:async/zone.dart:1265:19) #27 _CustomZone.runUnaryGuarded (dart:async/zone.dart:1170:7) #28 _invoke1 (dart:ui/hooks.dart:180:10) #29 PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:276:7) #30 _dispatchPointerDataPacket (dart:ui/hooks.dart:96:31)

参考这两条回答：
#1485 (comment)
#1828 (comment)