The print widget generates output map without the vector tile webamp or cached map image , tried several webmaps, even the ESRI topographic map (vector tile) and the output always the same-- white background (see attachment). Map image services without cache are printed on map.
Tried this tutorial: Print maps that contain secured services—ArcGIS Server | Documentation for ArcGIS Enterprise
that was posted on a topic similar to this, but it didn't help.
Working with Arcgis server 10.7
WAB 2.15