When the ArcGIS Server 10.5 GeoAnalytics and GeoEvent Server Patch is installed on the machine that has Insights for ArcGIS 1.1, charts cannot be rendered in cards.
If the patch has been installed and are experiencing issues with Insights for ArcGIS, uninstall the patch to correct the problem.This is noted in the ArcGIS Server 10.5 GeoAnalytics and GeoEvent Server Patch: <a href="http://support.esri.com/download/7476" target="_blank">http://support.esri.com/download/7476</a>