“Swift Language Version” (SWIFT_VERSION) is required to be configured correctly for targets which use Swift

In the navigator selection bar, click the magnifying glass, then search for "SWIFT_VERSION" You will find the places in the project where you can adjust the swift version accordingly.

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You can't. XCode 8.2 was the last version to support Swift 2.3. You have to either update to Swift 3 or use Xcode 8.2.


In My case I selected Pod and changed swift version for specific pod. This works for me.

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