请教一下，在block里执行[self appleLogin]; 为啥总是报错

[junlas]

cocos-example-projects/native-script-bridge/native/engine/ios/JsbBridgeTest.mm

Line 13 in 4286e0e

JsbBridgeWrapper* m = [JsbBridgeWrapper sharedInstance];

[pinker91277]

确实会报错，这是什么情况