We are using ArcGIS Enterprise 9.1 and are trying to publish custom printing services from ArcPro 3.0.
We have followed very closely to the two resources listed below. And we are experiencing inconsistent results.
Share custom layouts for printing from ArcGIS Pro
Enabling High-Quality Printing in Web Applications
The error we are now consistenly recieving is "Error executing tool. Export Web Map : Missing or invalid layout template file. Failed to execute (Export Web Map)."
We have tried a variety of layouts, from including titles and overview maps like in the video, to including nothing but the WEBMAP_MAP_FRAME. It will print the "MAP ONLY" option, but when we try printing any custom layouts it will fail.
The default printing service works fine, and the custom services we built in ArcMap are still working, but anything in Pro is failing us.