I am trying to convert a graphics layer to a kmz. When I use layer to KML tool, it does not fail, but it does not produce a kmz file either. I successfully created a kmz within the same project from a different graphics layer just a few days ago. Now, nothing.
Hard to say why would or wouldn't given the rules that will determine what will work
KML conversion—ArcGIS Pro | Documentation
can you pinpoint what the difference between the two layers would be?
Is a Graphics Layer or is it a Feature Class from a geodatabase or shapefile in the Contents Pane?