Same issue, I have also got this cmake warning:
-- qmlplugindump failed for org.kde.quickcharts. -- Could NOT find org.kde.quickcharts-QMLModule (missing: org.kde.quickcharts-QMLModule_FOUND) The qml plugin 'QuickChartsplugin' is a dependency of 'project', but the link target it defines (KF6::QuickChartsplugin) does not exist in the current scope. The plugin will not be linked.