小编Yal*_*eee的帖子

我的 Flutter 应用程序已更新到最新版本的 Flutter，并且我将 firebase_messaging 添加到我的应用程序中。完成此操作后，该应用程序在模拟器上运行良好，但当我尝试在实际 iOS 设备上运行它时崩溃，并出现以下错误：

  -[NSNull length]: unrecognized selector sent to instance 0x1ddcb9ee0
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[NSNull length]: unrecognized selector sent to instance 0x1ddcb9ee0'
*** First throw call stack:
(0x18c8959d8 0x1a0bfeb54 0x18c7a5bbc 0x18c89801c 0x18c899f8c 0x102deadcc 0x102dec698 0x102deb1a8 0x102dea8bc 0x18c4cd298 0x18c4ce280 0x18c4aa4f0 0x18c4aafdc 0x18c4b4800 0x1d4f3b5a4 0x1d4f3e874)
libc++abi.dylib: terminating with uncaught exception of type NSException
* thread #5, queue = 'com.google.firebase.auth.globalWorkQueue', stop reason = signal SIGABRT
    frame #0: 0x00000001b86f484c libsystem_kernel.dylib`__pthread_kill + 8
libsystem_kernel.dylib`__pthread_kill: …