Build iOS app on XCode to test on my device

Hello, I’m willing to submit a PR for the iOS app. I use XCode 16. I would like to test my modifications on my own device. Project opens, dependencies load, but build fails with
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/nextcloud-ios/Nextcloud.xcodeproj: No Account for Team “NKUJUXUJ3B”. Add a new account in Accounts settings or verify that your accounts have valid credentials.

  1. Do I need an Apple Developer Program account?
  2. Does it have to be registered somehow with existing groups related to NextCloud team in order for me to build and deploy my application on my device?
  3. What else am I missing?

Best,

Christophe