Can't preview the charts

[lg2578]

I‘ve forked the swiftuicharts,and cloned by xcode.
but the charts can't be previewed.
for example,I select the multiLineChartView ,and click the preview
nothing display in the canvas

[shah95rukh]

I just cloned it yesterday and it works for me. Are you using it in SwiftUI?

[RamonBrisk]

yeah, the same ,no lines inside the chart, just the chart frame shows.