🚨崩溃 NullReferenceException·LessonController.ReturnToMainMen · nm8v23

*古古识字*
`since 2026.08.24 19:38:55`

***Classifier***
```csharp
NullReferenceException: Object reference not set to an instance of an object.```
***Callstack***
```csharp
[1].LessonController.ReturnToMainMenu:0
[2].UnityEngine.Events.UnityAction.Invoke:0
[3].HGuGuExtension+<_MyInvoke_Imp>d__208.MoveNext:0
[4].UnityEngine.SetupCoroutine.InvokeMoveNext:0
```
***Attributes***
platform: *Android*
os.version: *Android OS 12 / API-31 (HUAWEIBTKR-W00/104.2.0.185C00)*
device.model: *HUAWEI BTKR-W00*
phone.number: *13929300876*
isPaid: ✅
currentWord: *绿*
version: *2026.08.18*
scene.active: *00HomePage*
playingLink: *甲骨文卡片*
lastLink: *甲骨文卡片*
secSinceLinkChange: *393.4*
secSinceLastFlowCall: *496.4*
clicksSinceLinkChange: *229*
shieldCount: *0*
dialogueBoxCount: *0*
isSynthetic: *false*
oplist:
```
[08-24 19:38:55] LoadScene: 00HomePage
[08-24 19:38:55] LoadScene: 00HomePage
[08-24 19:37:18] LoadSceneAsync: 01Lesson
[08-24 19:37:15] LoadScene: 00HomePage
[08-24 19:36:41] LoadSceneAsync: 01Lesson
[08-24 19:36:39] LoadScene: 00HomePage
[08-24 19:33:13] LoadSceneAsync: 01Lesson
[08-24 19:33:09] LoadScene: 00HomePage
[08-24 19:33:00] LoadSceneAsync: 01Lesson
[08-24 19:32:57] LoadScene: 00HomePage
```
#ph13929300876
#00HomePage
#NullReferenceException
#Unhandled exception
#ver20260818
#HUAWEI BTKR-W00
📸 [screenshot](https://bugsnap.cnaron.com/paid/13929300876.HUAWEI BTKR-W00.snap.2026.08.24.19.38.55.jpg)

附加现场（原 JSON 附件的内容）

【本地 opList（因果链，新→旧）】

[08-24 19:38:55] LoadScene: 00HomePage
[08-24 19:38:55] LoadScene: 00HomePage
[08-24 19:37:18] LoadSceneAsync: 01Lesson
[08-24 19:37:15] LoadScene: 00HomePage
[08-24 19:36:41] LoadSceneAsync: 01Lesson
[08-24 19:36:39] LoadScene: 00HomePage
[08-24 19:33:13] LoadSceneAsync: 01Lesson
[08-24 19:33:09] LoadScene: 00HomePage
[08-24 19:33:00] LoadSceneAsync: 01Lesson
[08-24 19:32:57] LoadScene: 00HomePage
[08-24 19:32:57] LoadScene: 00HomePage
[08-24 19:32:49] LoadSceneAsync: 01Lesson
[08-24 19:32:44] LoadScene: 00HomePage
[08-24 19:32:27] LoadSceneAsync: 01Lesson
[08-24 19:32:22] LoadScene: 00HomePage
[08-24 19:32:22] LoadSceneAsync: 02特色功能
[08-24 19:32:17] LoadSceneAsync: 01首页面
[08-24 19:30:43] LoadSceneAsync: 02特色功能
[08-24 19:30:41] LoadSceneAsync: 01首页面
[08-24 19:30:39] LoadSceneAsync: 02二级菜单之字
[08-24 19:30:39] 返回到二级菜单0
[08-24 19:30:39] Flow: BtnBack_OnClick
[08-24 19:30:22] Flow: GameWritingZhaoZheXie
[08-24 19:30:22] Flow: GameBbYellow_Finish
[08-24 19:30:22] Flow: GameBbYellow
[08-24 19:30:22] Flow: GameBbRed_Finish
[08-24 19:30:02] Flow: GameBbRed
[08-24 19:30:02] Flow: GameBbWhite_Finish
[08-24 19:30:02] Flow: GameBbWhite
[08-24 19:30:02] Flow: WhichLinkShouldBe_CurrentWordEnd

【前序异常（新→旧）】

[2026.08.24 19:38:55][Unhandled exception:LessonController.ReturnToMainMenu () (at <00000000000000000000000000000000>:0):NullReferenceException: Object reference not set to an instance of an object.]
[2026.08.24 15:41:42][Unhandled exception:FlowLineGameFeiHuaLingMono+<>c.<OnDrop>b__25_0 (UnityEngine.Transform fr) (at <00000000000000000000000000000000>:0):UnityException: Transform child out of bounds]
[2026.07.14 17:00:48][Unhandled exception::FlowLineGameZuCiMono.MixOptions (System.String currentWord) (at <00000000000000000000000000000000>:0):NullReferenceException: Object reference not set to an instance of an object.]

【prefs（白名单）】

当前字: 绿
本节课已学字: 风虫清
每节课学几个字: 5
手机号: 13929300876
购买的会员类型: 11001
本地存的最新版本号: 2026.08.18
是否首次安装_bool: False
消消乐放宽机型: EEBBK S5，EEBBK S4
识字断点: 绿|GameWritingZhaoZheXie

【最近 Debug.Log】

[LessonController] 连对数变化: 2
Answer result: Correct, Accuracy: 70.00%, Current streak: 2
[LessonController] 进度更新: 100.0% (13/12)
[LessonController] 课程完成! 耗时: 94.8秒, 完成卡片: 12
[LessonController] 从结算弹窗确认退出
[LessonController] 执行返回主菜单逻辑...
[19:38:55] 开始加载场景 00HomePage
[LessonController] 场景加载请求已发送
[BackEventManager] Scene unloaded: 01Lesson, stack count: 2
[Audio] 已同步存档设置: SFX On=True, Volume=1
[19:38:55] 00HomePage 加载完成，用时 0.10 秒。
[HomePage] 初始化轮播器至索引: 0
[LessonController] 从结算弹窗确认退出
[LessonController] 执行返回主菜单逻辑...
[19:38:55] 开始加载场景 00HomePage