Xcode build is missing expected TARGET_BUILD_DIR build setting

Question

I face error while launching on device on iPhone 12 Pro Max . This is console log

Launching lib/main.dart on iPhone 12 Pro Max in `debug mode`
Running Xcode build...
Xcode build done.                                           270.9s
Xcode build is missing expected TARGET_BUILD_DIR build setting.
Could not build the application for the simulator.
Error launching application on iPhone 12 Pro Max.

Answer 1

I just ran into this and fixed it as follows:

• run command flutter upgrade
• run command flutter clean
• attach phone
• run command flutter run

If it still fails, open the Xcode runner project, set your development team and run it directly from there.

After it runs, close Xcode, do a clean build, and run it using your preferred approach.