One of the two will be used. Which one is undefined.

Open

#3,836 opened on Jun 11, 2026 1 comment 1 reaction 0 assignees View on GitHub

bug needs-triage

Dominant language: Swift
Stars: 8.1k
Forks: 3.7k
PR merge metrics: No merged PRs in 30d

Description

def facebookSDK
pod 'FacebookSDK', '11.2.1'
pod 'FBSDKCoreKit', '14.1.0'
pod 'FBSDKLoginKit', '14.1.0'
pod 'FBSDKShareKit', '14.1.0'
pod 'FBAudienceNetwork', '6.20.1'
pod 'GoogleMobileAdsMediationFacebook', '6.20.1.0'
end

### Steps to reproduce

objc[1612]: Class FBAEMAdvertiserMultiEntryRule is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x103179018) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d4728f0). One of the two will be used. Which one is undefined.
objc[1612]: Class FBAEMAdvertiserRuleFactory is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x103179500) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxxdebug.dylib (0x10d472968). One of the two will be used. Which one is undefined.
objc[1612]: Class FBAEMAdvertiserSingleEntryRule is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x1031797f0) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d472990). One of the two will be used. Which one is undefined.
objc[1612]: Class FBAEMConfiguration is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x103179f58) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d4729e0). One of the two will be used. Which one is undefined.
objc[1612]: Class FBAEMEvent is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x10317a230) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d472a30). One of the two will be used. Which one is undefined.
objc[1612]: Class FBAEMInvocation is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x10317a880) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d472a80). One of the two will be used. Which one is undefined.
objc[1612]: Class FBAEMNetworker is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x10317ace8) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d472af8). One of the two will be used. Which one is undefined.
objc[1612]: Class FBAEMReporter is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x103178b68) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d472b20). One of the two will be used. Which one is undefined.
objc[1612]: Class FBAEMRequestBody is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x10317b408) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d472b70). One of the two will be used. Which one is undefined.
objc[1612]: Class FBAEMRule is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x10317b608) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d472bc0). One of the two will be used. Which one is undefined.
objc[1612]: Class FBSDKBase64 is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBSDKCoreKit_Basics.framework/FBSDKCoreKit_Basics (0x1029cb298) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d47e458). One of the two will be used. Which one is undefined.
objc[1612]: Class FBSDKBasicUtility is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBSDKCoreKit_Basics.framework/FBSDKCoreKit_Basics (0x1029cb2e8) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d47e4a8). One of the two will be used. Which one is undefined.
objc[1612]: Class FBSDKCrashHandler is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.a

### Code samples & details

```swift
objc[1612]: Class FBAEMAdvertiserMultiEntryRule is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x103179018) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d4728f0). One of the two will be used. Which one is undefined.
objc[1612]: Class FBAEMAdvertiserRuleFactory is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x103179500) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d472968). One of the two will be used. Which one is undefined.
objc[1612]: Class FBAEMAdvertiserSingleEntryRule is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x1031797f0) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d472990). One of the two will be used. Which one is undefined.
objc[1612]: Class FBAEMConfiguration is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x103179f58) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d4729e0). One of the two will be used. Which one is undefined.
objc[1612]: Class FBAEMEvent is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x10317a230) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d472a30). One of the two will be used. Which one is undefined.
objc[1612]: Class FBAEMInvocation is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x10317a880) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d472a80). One of the two will be used. Which one is undefined.
objc[1612]: Class FBAEMNetworker is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x10317ace8) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d472af8). One of the two will be used. Which one is undefined.
objc[1612]: Class FBAEMReporter is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x103178b68) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d472b20). One of the two will be used. Which one is undefined.
objc[1612]: Class FBAEMRequestBody is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x10317b408) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d472b70). One of the two will be used. Which one is undefined.
objc[1612]: Class FBAEMRule is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBAEMKit.framework/FBAEMKit (0x10317b608) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d472bc0). One of the two will be used. Which one is undefined.
objc[1612]: Class FBSDKBase64 is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBSDKCoreKit_Basics.framework/FBSDKCoreKit_Basics (0x1029cb298) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d47e458). One of the two will be used. Which one is undefined.
objc[1612]: Class FBSDKBasicUtility is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/Frameworks/FBSDKCoreKit_Basics.framework/FBSDKCoreKit_Basics (0x1029cb2e8) and /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.app/xxx.debug.dylib (0x10d47e4a8). One of the two will be used. Which one is undefined.
objc[1612]: Class FBSDKCrashHandler is implemented in both /private/var/containers/Bundle/Application/416AF928-3AEB-4F9F-9413-41451812E8DE/xxx.a
```

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One of the two will be used. Which one is undefined.

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