5 Answers

You must have different bundleIds for your project and extension.

Example:

  • App bundleId: com.companyName.appName
  • Extension bundleId: com.companyName.appName.extensionName

I got this error when I set one configuration file for my project and notification service.

I changed the notification service configuration file to the correct one and this fixed my problem. enter image description here

user_80692410

Make sure you have properly set your bundle identifiers for your Main app target and extensions.

user_25139470

Enable Copy only when Installing

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user_2287550

Making sure the configuration for Debug and Release mode is similar for both project and extension resolved this issue.enter image description here

user_49649570
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