I've started facing this issue when upgraded my system from macOS 14 (Sonoma) to macOS 15 (Sequoia) along with Xcode update from 16.1 to 16.2. I've tried all the above methods and nothing works me. What works for me was the following: Removed all Swift Package dependencies. Cleaned the build folder. Started building the project again. Added each package dependency one by one as the build process prompting the missing package error.