Value for SWIFT_VERSION cannot be empty

Question

I have installed swift pods for the obj c project. I got this error when I was trying to build it.

I have gone through all the solutions like deleting derived

Answer 1

Still, after all of that, if you're still at lost, you can add a SWIFT_VERSION directly the project file:

        80B11AAAAAAAAAAAAAAAC3E5D8 /* Debug */ = {
        isa = XCBuildConfiguration;
        baseConfigurationReference = DF5...040;
        buildSettings = {
            ...
            PRODUCT_MODULE_NAME = react-native-some-module;
            ...
            SWIFT_VERSION = "4.2";
        };
        name = Debug;
    };

Repeat for both the Debug and Release targets. That had me hop over this issue.