“Use Legacy Swift Language Version” (SWIFT_VERSION) is required to be configured correctly for targe

“Use Legacy Swift Language Version” (SWIFT_VERSION) is required to be configured correctly for targets which use Swift. Use the [Edit > Convert > To Current Swift Syntax…] menu to choose a Swift version or use the Build Settings editor to configure the build setting directly.

1.只更新app和tests uitests

2.把所有库更新到最新

如果遇见

module file was created by a newer version of the compiler:

1.clean

2.alt+clean clean build folder