嘿伙计们，我目前正在开发一个颤振应用程序，我正在使用MAC进行开发，在它工作正常之前，突然当我今天运行代码时，这是XCode的输出：
2019-12-20 09:39:52.584713+0800 Runner[9120:131811] flutter: Observatory listening on http://127.0.0.1:51798/Bd8XcvSU0Bw=/
2019-12-20 09:39:52.916290+0800 Runner[9120:131800] flutter: null
2019-12-20 09:39:53.414262+0800 Runner[9120:131639] [plugin] AddInstanceForFactory: No factory registered for id <CFUUID 0x60000084dde0> F8BB1C28-BAE8-11D6-9C31-00039315CD46
2019-12-20 09:39:53.455205+0800 Runner[9120:131639] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSURL initFileURLWithPath:]: nil string parameter'
*** First throw call stack:
(
0 CoreFoundation 0x000000010e43802e __exceptionPreprocess + 350
1 libobjc.A.dylib 0x000000010ddfeb20 objc_exception_throw + 48
2 Foundation 0x000000010d8e53a6 -[NSURL(NSURL) initFileURLWithPath:] + 575
3 Foundation 0x000000010d8e5b64 +[NSURL(NSURL) fileURLWithPath:] + 45
4 Runner 0x000000010b10492f -[FLTVideoPlayer initWithAsset:frameUpdater:] + 191
5 Runner 0x000000010b108b2d -[FLTVideoPlayerPlugin handleMethodCall:result:] + 1581
6 Flutter 0x000000010b6d64fd __45-[FlutterMethodChannel setMethodCallHandler:]_block_invoke + 104
7 Flutter 0x000000010b66fec0 _ZNK7flutter21PlatformMessageRouter21HandlePlatformMessageEN3fml6RefPtrINS_15PlatformMessageEEE + 166
8 Flutter 0x000000010b673780 _ZN7flutter15PlatformViewIOS21HandlePlatformMessageEN3fml6RefPtrINS_15PlatformMessageEEE + 38
9 Flutter 0x000000010b6d0db3 _ZNSt3__110__function6__funcIZN7flutter5Shell29OnEngineHandlePlatformMessageEN3fml6RefPtrINS2_15PlatformMessageEEEE4$_31NS_9allocatorIS8_EEFvvEEclEv + 57
10 Flutter 0x000000010b6823f1 _ZN3fml15MessageLoopImpl10FlushTasksENS_9FlushTypeE + 123
11 Flutter 0x000000010b687742 _ZN3fml17MessageLoopDarwin11OnTimerFireEP16__CFRunLoopTimerPS0_ + 26
12 CoreFoundation 0x000000010e39b944 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
13 CoreFoundation 0x000000010e39b632 __CFRunLoopDoTimer + 1026
14 CoreFoundation 0x000000010e39ac8a __CFRunLoopDoTimers + 266
15 CoreFoundation 0x000000010e3959fe __CFRunLoopRun + 2238
16 CoreFoundation 0x000000010e394e16 CFRunLoopRunSpecific + 438
17 GraphicsServices 0x0000000114578bb0 GSEventRunModal + 65
18 UIKitCore 0x00000001179c3b48 UIApplicationMain + 1621
19 Runner 0x000000010b0d4580 main + 112
20 libdyld.dylib 0x00000001107d4c25 start + 1
21 ??? 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
我真的很期待你的帮助。提前致谢
Icloud删除了我的"background.mp4"文件，它导致了崩溃。