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swift3 - How to fix "SWIFT_VERSION '3.0' is unsupported, supported versions are: 4.0, 4.2, 5.0" error in Xcode 10.2?

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swift3 - How to fix "SWIFT_VERSION '3.0' is unsupported, supported versions are: 4.0, 4.2, 5.0" error in Xcode 10.2?

I'm trying to run downloaded from app, try to open in Xcode and have an error:

" Showing Recent Messages
:-1: SWIFT_VERSION '3.0' is unsupported, supported versions are: 4.0, 4.2, 5.0. (in target 'SimpleWeather')"

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Select the target 'SimpleWeather' in the project and change language version Target->build setting -> Swift compiler language -> select 5, 4.2 etc

image of build setting for changing compiler language


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