Error: RCTCxxModule was not exported. Did you forget to use RCT_EXPORT_MODULE()

[geirman]

Follow on to issue #1

When attempting to send an email using a function with this signature...

sendImageIOS = (to, subject, path, type) => {
    Mailer.mail({
        subject,
        recipients: [to],
        body: 'Optional Comment: ',
        attachment: { path },
        isHTML: true
    }, (error, event) => {
        console.log(error);
        Alert.alert(
            'Error',
            'Email could not be sent',
            [
            {text: 'Ok', onPress: () => console.log('OK: Email Error Response')},
            {text: 'Cancel', onPress: () => console.log('CANCEL: Email Error Response')}
            ],
            { cancelable: true }
        )
    });
}

RESULT: Email launches, no image attached. Some curious entries in the logs

2017-11-03 23:25:06.562 [info][tid:main][RCTCxxBridge.mm:187] Initializing <RCTCxxBridge: 0x1c01afa40> (parent: <RCTBridge: 0x1c00a5dc0>, executor: (null))
2017-11-03 23:25:06.567512-0700 photoEmailer[589:500846] Initializing <RCTCxxBridge: 0x1c01afa40> (parent: <RCTBridge: 0x1c00a5dc0>, executor: (null))
2017-11-03 23:25:06.700 [warn][tid:main][RCTBridge.m:121] Class RCTCxxModule was not exported. Did you forget to use RCT_EXPORT_MODULE()?
2017-11-03 23:25:06.700275-0700 photoEmailer[589:500846] Class RCTCxxModule was not exported. Did you forget to use RCT_EXPORT_MODULE()?
2017-11-03 23:25:06.778 [warn][tid:main][RCTModuleData.mm:69] Module RNMail requires main queue setup since it overrides `init` but doesn't implement `requiresMainQueueSetup. In a future release React Native will default to initializing all native modules on a background thread unless explicitly opted-out of.
2017-11-03 23:25:06.777942-0700 photoEmailer[589:500846] Module RNMail requires main queue setup since it overrides `init` but doesn't implement `requiresMainQueueSetup. In a future release React Native will default to initializing all native modules on a background thread unless explicitly opted-out of.
2017-11-03 23:25:06.789 [info][tid:main][RCTRootView.m:301] Running application photoEmailer ({
    initialProps =     {
    };
    rootTag = 1;
})
2017-11-03 23:25:06.789226-0700 photoEmailer[589:500846] Running application photoEmailer ({
    initialProps =     {
    };
    rootTag = 1;
})
...
2017-11-03 23:26:09.809338-0700 photoEmailer[589:500846] [MC] Filtering mail sheet accounts for bundle ID: org.reactjs.native.example.photoEmailer, source account management: 1
2017-11-03 23:26:09.814990-0700 photoEmailer[589:500846] [MC] Filtering mail sheet accounts for bundle ID: org.reactjs.native.example.photoEmailer, source account management: 1
2017-11-03 23:26:10.087683-0700 photoEmailer[589:500846] [App] if we're in the real pre-commit handler we can't actually add any new fences due to CA restriction

[KouSyurei]

请问你现在解决了吗，我在显示本地图片的时候遇到这样的问题，按照这样的方法也没能解决