[ios開發]程序中bug處理Unable to load module

在開發中遇到了這樣的bug：

fatal error: malformed or corrupted AST file: 'Unable to load module "/Users/mac/Library/Developer/Xcode/DerivedData/ModuleCache/343TSDGJVVCHH/Darwin.pcm": module file not found'
note: after modifying system headers, please delete the module cache at '/Users/mac/Library/Developer/Xcode/DerivedData/ModuleCache/343TSDGJVVCHH'
1 error generated.

【XCode】不一樣版本xcode打開項目報錯

解決方法：
點擊XCode -> window ->Organizer 選取出問題的project，點擊右邊delete按鈕，從新運行便可。