Xcode keeps showing:-1: SWIFT_VERSION '5.0' is unsupported, supported versions are: 3.0, 4.0, 4.2.Any solution?
Change the podfile swift version like for any pod if you are getting this errorlike
Select pods of your project
After then you follow the steps as described in the image and change the swift version for the pod 
I am currently using Xcode 10.1. The "Targets" section is in another place of the interface.
Beyond that, the Ravi Ojha solution works fine as well.
Follow these steps and change nay required pod version.