Opening import file for module 'Swift': Permission denied
问题 As the title shows, I'm currently facing a problem in which I'm trying to add a Swift file to my ObjC project. The bridging header is generated and as soon as I'm trying to build, it stops with the error: <unknown>:0: error: opening import file for module 'Swift': Permission denied This only happens with 1 specific project (which is an old app that has been receiving updates once every year or so). A newer project can implement the swift file and build without any problems. I've compared the