在xcode中运行react native项目时出现以下错误：
2018-07-12 14:19:13.336 [info][tid:main][RCTCxxBridge.mm:210]
Initializing <RCTCxxBridge: 0x6000001d4be0> (parent: <RCTBridge: 0x6080002c1260>, executor: (null))
2018-07-12 14:19:13.338799+0200 pleasefix[16614:4513384] Initializing
<RCTCxxBridge: 0x6000001d4be0> (parent: <RCTBridge: 0x6080002c1260>,
executor: (null))
2018-07-12 14:19:13.444 [warn][tid:main][RCTBridge.m:119] Class
RCTCxxModule was not exported. Did you forget to use
RCT_EXPORT_MODULE()?
2018-07-12 14:19:13.444411+0200 pleasefix[16614:4513384] Class
RCTCxxModule was not exported. Did you forget to use
RCT_EXPORT_MODULE()?
2018-07-12 14:19:13.471746+0200 pleasefix[16614:4513384] -[RCTCxxBridge
devSettings]: unrecognized selector sent to instance 0x6000001d4be0
2018-07-12 14:19:13.487811+0200 pleasefix[16614:4513384] *** Terminating
app due to uncaught exception 'NSInvalidArgumentException', reason: '-
[RCTCxxBridge devSettings]: unrecognized selector sent to instance
0x6000001d4be0'
有人遇到过这个问题吗？任何想法如何解决？