title: Xcode keeps showing:-1: SWIFT_VERSION '5.0' is unsupported, supported versions are: 3.0, 4.0, 4.2.Any solution?
body: <p>When I install facebook SDK pods into my ios project, It says ":-1: SWIFT_VERSION '5.0' is unsupported, supported versions are: 3.0, 4.0, 4.2. (in target 'FacebookCore')"</p>
  
  <p>I am using swift 4.2 
  any solution?</p>