We're also getting the same error ... encountered an error (The test runner hung before establishing connection.) We tried nearly everything, including disabling the Thread Performance Checker in the test scheme shutting down all emulators via xcrun simctl shutdown all and erasing them xcrun simctl erase all force killing any potential hanging simulators beforehand clearing all Simulator logs and caches restarting the machine(s) But this still keeps popping up intermittently. We're using Xcode 26.2. Any tips on what we might want to try next? Thanks!

For us, it was the missing entries in Info.plist. Make sure to add the new entries NSCalendarsWriteOnlyAccessUsageDescription and/or NSCalendarsFullAccessUsageDescription. Also, keep in mind, that if you're still supporting older iOS versions (lower than 17), you should also include the NSCalendarsUsageDescription.

This has been fixed in CocoaPods - https://github.com/CocoaPods/CocoaPods/pull/12009 - but not yet released. It should appear in the 1.13.0 version. You can point to the latest CocoaPods version in your Gemfile until then.

What works quite well for me is using the Contacts app - storing the deeplink under a specific contact's URL (i.e. Contacts > John Appleseed > Edit > add url > type url > done > tap url)

"Solved it" by going back to Xcode 12.5.1 for the moment.