“Use Legacy Swift Language Version”

[ilyarmnzhdn]

I have this bug

“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.
warning: no umbrella header found for target 'HackerSwifter', module map will not be generated

How can I solve it?
xcode 8.1

[gerasumit]

@ilyarmnzhdn There is answer in your question. Follow the instructions and Convert the Swift Syntax to Swift 3