attempted to initialize an object with an unknown UUID

Question

I have taken SVN check-in for a project. Thereafter I have installed pod via terminal. After installation of pod there are few warning stating

    <PBXResourcesBuildPhase UUID=...> attempted to initialise an 
    object with an unknown UUID.

What might be reason? Is this warning critical?

Kousik · Answer 1 · 2020-06-09T16:36:26.483

63

Step 1: Deintegrate your project from CocoaPods. Removing all traces of CocoaPods from your Xcode project.

$pod deintegrate ProjectName.XCODEPROJ

Step 2: Install the pod Again

$pod install

Make sure you are replacing ProjectName.XCODEPROJ with your project name.

edited Jun 09 '20 at 16:36

answered Sep 06 '17 at 12:57

Kousik

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This worked for me and was significantly easier than messing around with linked frameworks and libraries. – Itai Ferber Mar 19 '20 at 14:01
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This is the right way to make CocoaPods regenerate the project. This should be the accepted answer. – Vladimir Grigorov Oct 06 '22 at 08:50

score 48 · Accepted Answer · edited Sep 04 '19 at 15:30

The reason that happened in my case was some developer updated a pod A while I installed a new pod B (without updated pod A). So when I merged his codes I got the warning.

An easy way to fix this is to

1. remove libPods.a from General->Linked Frameworks and libraries 
2. run `pod install` or `pod update "an-existing-pod"` again.

For step #2 the purpose is to update .xcodeproj file not to install pod again. If pod is already there cocoapods will just update .xcodeproj file.

Ted · Answer 3 · 2022-11-09T12:00:45.083

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Xcode 8 - 14

Target > General > Linked Frameworks and Libraries

edited Nov 09 '22 at 12:00

answered Dec 20 '16 at 04:54

Ted

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After much brainstorming, this fix worked for me!! The pod project file does not have any errors now. – iosCurator Feb 21 '17 at 07:20
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Also fixed the issue for me. Xcode automatically adds the Pods back to the Linked Frameworks and Libraries, so deleting it purely fixed the pod warning for me. – Florensvb Mar 04 '17 at 12:57

score 6 · Answer 4 · answered Jul 12 '20 at 14:12

6

The way I solved that is not described in the thread

Commented all pods and run pod install. Pods folder eventually removed. But still having the warning in the terminal
Uncommented the pod. re-run pod install. The warning is now gone.

answered Jul 12 '20 at 14:12

Ankur Lahiry

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score 4 · Answer 5 · answered Jun 17 '20 at 19:01

This error happened to me after resolving some merge conflicts in the project file.

In Xcode 11.4.1, I removed Pods_TARGETNAME.framework under Project Settings > General > Frameworks, Libraries, and Embedded Content.

I then ran pod install, after which everything was fine again.

score 3 · Answer 6 · answered Mar 03 '20 at 08:49

3

Just run

pod clean pod install.

And those errors should go.

answered Mar 03 '20 at 08:49

Avinash

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Using Cocoapods 1.10.1 it says `[!] Unknown command: clean`; how do you have this command ? – Axel Guilmin May 22 '21 at 09:47

score 3 · Answer 7 · answered Aug 03 '20 at 16:49

My colleague and I spent hours trying to figure out how to fix a similar error:

[!] `<PBXBuildFile UUID=`050DCB84CE258104B4E8C808`>` attempted to initialize an object with an unknown UUID. `12B87A081D0745C6D77F7885` for attribute: `file_ref`. This can be the result of a merge and the unknown UUID is being discarded.

What fixed it for us:

identify the file that the "unknown UUID" referred to, in the .pbxproj file; in our case, it was libPods-<TARGET_NAME>.a
find that file in the file browser in XCode
delete the file within XCode
rerun pod install

score 2 · Answer 8 · answered Jan 23 '19 at 11:09

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It still happens from time to time to me. My solution is to search after the unknown UUID in your project file and simply delete all lines you'll find.

Terminal-command:

cat YOUR_PROCJECT_NAME.xcodeproj/project.pbxproj | grep 'UNKNOWN_UUID'

You should find something like this:

UNKNOWN_UUID /* (null) in Resources */,

answered Jan 23 '19 at 11:09

Apoc

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This was my fix. A file had been removed from the project, but a stray reference was still in the project.pbxproj. Manually deleted the line – John May 22 '20 at 15:55

score 1 · Answer 9 · answered Jun 29 '16 at 13:16

I don't know if you fixed this or not, but for future reference, I has the same issue.

On my case, after opening .pbxproj file on a text editor, realised that the first UUID pointed to the 'Copy Bundle Resources' of the 'Build Phases'.

Removing that and adding again fixed the issue for me.

score 1 · Answer 10 · answered Sep 03 '20 at 06:59

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I commented out all pods and did "pod install" then uncommented all pods to previous state and did "pod install". That solved my problem

answered Sep 03 '20 at 06:59

Aleksandar

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score 0 · Answer 11 · answered Jan 17 '19 at 09:28

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For my case, I re-run pod install and find this warnings aren't showing. This is due to merging the project file.

answered Jan 17 '19 at 09:28

Ankur Lahiry

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score 0 · Answer 12 · answered May 13 '20 at 08:26

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There could also be problem with multiple xcode version installations. Try this link for more details -

https://www.ryadel.com/en/xcode-sdk-iphoneos-cannot-be-located-mac-osx-error-fix/

answered May 13 '20 at 08:26

Soman Dubey

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Nope...this problem has got nothing to do with multiple versions of Xcode. – Jayprakash Dubey May 14 '20 at 09:44

score 0 · Answer 13 · answered Oct 04 '22 at 08:44

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Open xprj file in ordinary editor and find file with your UID = "C39D10ED1BD5F1F0000C4DD9". In my case file does not exist and left from merge process

answered Oct 04 '22 at 08:44

Leonif

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attempted to initialize an object with an unknown UUID

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