Hello, I just tried to test your plugin for WordPress which I got here : https://github.com/highcharts/highcharts-editor/releases It installs correctly and the new button displays well in the content editor. Problem encountered: When I click on the button to display the chart editor, a red message appears and says: There's a problem with your chart! [object Object] And I can't play with the data or display it as a graph. Clarification: I am in freshly updated WordPress 5.5. Thank you