Can't find the answers after the release of iOS 15. Did you find any solutions?

Had the same problem, but solved. You can try to add arm64 to the Build Settings -> Architectures -> Excluded Architectures for Any iOS Simulator SDK. It helps many of devs, but for me it didn't work. You can Clean Build Folder (⇧ + ⌘ + K), clean DerivedData directory, CocoaPods caches, and restart macOS, Xcode and Simulator. This solution works for me.