I have just started to build a web app with web appbuilder. It contains only one layer with coordinates and of course a basemap. The legend shows the coordinates, and so does the attribute table. I have tried to add the Filter widget several times, so that the coordinates display different attribute table data variables, but when I try to create a new filter, it does not let me choose a layer. The drop down menu is empty and I cant add the widget.
Hopefully some one has had this issue before and knows how to solve it.