Issue with creating Sticker Apps

When I create a sticker app in any version of Xcode or for any iOS version, I keep running into the following error:

Error acquiring assertion: <Error Domain=RBSAssertionErrorDomain Code=2 "Could not find attribute name in domain plist" UserInfo={NSLocalizedFailureReason=Could not find attribute name in domain plist}>

I only added stickers after creating the project and this is what happens after running it. I have cleared Derived Data, tried creating a new Info.plist, but nothing seems to solve this core issue. This also occurs both when attempting to run the project on a simulated phone and a physical device. This error also only happens when the sticker app is opened in iMessage. I have looked for solutions everywhere, but none seem to solve my problem. Am I overlooking something?

You must provide iMessage App Icon when building sticker packs. Did you add al the required icons in the iMessage App Icon well in your Xcode project?

Issue with creating Sticker Apps
 
 
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