Flutter | ERROR | database is locked Possibly there are two concurrent builds running in the same fi-CodePudding

Full error message

Error (Xcode): unable to attach DB: error: accessing build database "/Users/eapple/Library/Developer/Xcode/DerivedData/Runner-gvpltuxpqwltadakkxbfdszjoppl/Build/Intermediates.noindex/XCBuildData/build.db": database is locked Possibly there are two concurrent builds running in the same filesystem location.

Could not build the application for the simulator.
Error launching application on iPhone SE (3rd generation)

CodePudding user response：

just closed the emulator then removed it from dock and finally stated it again and all of the sudden everything was working fine error had just vanished.