设备和模拟器上的流星 ios 空白屏幕

Question

My Meteor app runs fine in browser and android device however on ios-device and simulator I am always stuck with a blank white screen after launch. Xcode is new to me so i don't know if it is something i am doing wrong? However I followed the ios testing directions to the letter. I also tried numerous fixes my google is riddled with last seen dates on every keyword search i can think of. My Safari developer console shows these output errors pasted below.......Has anyone else seen this problem or know how to fix it?

(substituted my ip address for http://000.000.00.000:3000/ for obvious security reasons. also note: body element is empty but updates the iphone screen if i edit html in console. It seems like my homepage is never rendered)

[Error] TypeError: undefined is not an object (evaluating 'window.navigator.mediaDevices.getUserMedia')
    index.js (elmarti_video-chat.js:1042)
    fileEvaluate (modules-runtime.js:343)
    index.js (elmarti_video-chat.js:453)
    fileEvaluate (modules-runtime.js:343)
    index.js (elmarti_video-chat.js:53)
    fileEvaluate (modules-runtime.js:343)
    (anonymous function) (elmarti_video-chat.js:6319)
    Global Code (elmarti_video-chat.js:6326)
[Error] Origin http://localhost:12952 is not allowed by Access-Control-Allow-Origin.
[Error] Failed to load resource: Origin http://localhost:12952 is not allowed by Access-Control-Allow-Origin. (_timesync, line 0)
[Error] XMLHttpRequest cannot load http://000.000.00.000:3000/_timesync due to access control checks.
[Error] TypeError: undefined is not an object (evaluating 'VideoCallServices')
    (anonymous function) (app.js:1950)
    (anonymous function) (blaze.js:3398)
    _withTemplateInstanceFunc (blaze.js:3744)
    fireCallbacks (blaze.js:3394)
    (anonymous function) (blaze.js:3474)
    fireCallbacks (blaze.js:2014)
    nonreactive (tracker.js:640)
    (anonymous function) (blaze.js:2011)
    _withCurrentView (blaze.js:2271)
    _fireCallbacks (blaze.js:2010)
    _createView (blaze.js:2028)
    _materializeView (blaze.js:2073)
    materializeDOMInner (blaze.js:1532)
    _materializeDOM (blaze.js:1474)
    (anonymous function)
    _materializeDOM (blaze.js:1483)
    (anonymous function) (blaze.js:2113)
    nonreactive (tracker.js:640)
    _materializeView (blaze.js:2079)
    render (blaze.js:2370)
    insert (iron_dynamic-template.js:518)
    insert (iron_router.js:1639)
    maybeAutoInsertRouter (iron_router.js:1629)
[Error] Origin http://localhost:12952 is not allowed by Access-Control-Allow-Origin.
[Error] Failed to load resource: Origin http://localhost:12952 is not allowed by Access-Control-Allow-Origin. (_timesync, line 0)
[Error] XMLHttpRequest cannot load http://000.000.00.000:3000/_timesync due to access control checks.
[Error] Origin http://localhost:12952 is not allowed by Access-Control-Allow-Origin.
[Error] Failed to load resource: Origin http://localhost:12952 is not allowed by Access-Control-Allow-Origin. (_timesync, line 0)
[Error] XMLHttpRequest cannot load http://00.000.00.000:3000/_timesync due to access control checks.
[Error] Origin http://localhost:12952 is not allowed by Access-Control-Allow-Origin.
[Error] Failed to load resource: Origin http://localhost:12952 is not allowed by Access-Control-Allow-Origin. (_timesync, line 0)
[Error] XMLHttpRequest cannot load http://000.000.00.000:3000/_timesync due to access control checks.
[Error] Origin http://localhost:12952 is not allowed by Access-Control-Allow-Origin.
[Error] Failed to load resource: Origin http://localhost:12952 is not allowed by Access-Control-Allow-Origin. (_timesync, line 0)
[Error] XMLHttpRequest cannot load http://000.000.00.000:3000/_timesync due to access control checks.
[Error] Origin http://localhost:12952 is not allowed by Access-Control-Allow-Origin.
[Error] Failed to load resource: Origin http://localhost:12952 is not allowed by Access-Control-Allow-Origin. (_timesync, line 0)
[Error] XMLHttpRequest cannot load http://000.000.00.000:3000/_timesync due to access control checks.

Answer 1

I faced the same error and I solved it of the following way:

1. Remove node_modules folder
2. Execute meteor reset
3. Remove .cache folder
4. Install dependencies again (I used yarn).
5. And done!!! The app should be run in simulator and device.

Tested on:

• Mac OS 11.1 Big Sur
• XCode 12.3
• Meteor 1.12.1
• Front-end is built with Vue and Vuetify using akryum package.
• Simulator with iOS 14.3 on iPhone 12 Pro Max
• Physical device with iOS 14.3 on iPhone SE

I hope this help you as well.