I have updated the carthage after updated myxcode to 10.2 , And the Carthage framework class is not found alert I am getting .

Cannot find interface declaration for 'ChartMarkerImage', superclass of 'BalloonMarker' ?

My project swift version was 4.0 still.

But the file is available in Carthage framework .

What was went wrong here ?

What i tried is

Set toolchain to SWIFT_4_2 but no luck.
Added #import <chart/chart.h> in pch file still getting error.