Thanks for the suggestion. I did run that and no error came back. I should back up and correct my above comment. Basically if I run the below code in ArcMAP or Pro it will execute fine on my desktop. However, when publish this as a GP services from both ArcMAP and Pro it will fail when I run it through the WAB Geoprocessing widget.
# Import Modules ----------------------------------------------------------------------------------------------------------------------
import arcpy, os
# -------------------------------------------------------------------------------------------------------------------------------------
arcpy.env.overwriteOutput = True
outFolder = arcpy.env.scratchFolder
featureLayer = arcpy.GetParameter(0)
outPutName = arcpy.GetParameterAsText(1)
kmzFile = os.path.join(outFolder, "{0}.kmz".format(outPutName))
arcpy.LayerToKML_conversion(featureLayer, kmzFile)
arcpy.AddMessage(kmzFile)
However, if I include arcpy.MakeFeatureLayer as the first step, prior to calling arcpy.LayerToKML it will run fine on ArcMAP and when I publish as a GP Service from ArcMAP it executes appropriately through the WAB Geoprocessing widget and the KMZ is created on the server. If I execute this through Pro it executes successfully as far as not failing goes, but it does not produce the KMZ just as you pointed out above. I went ahead and published it even though it did not produce the KMZ in hopes that it would work on ArcGIS Server. However, when I executed it through the WAB Geoprocessing widget it does not fail, but the KMZ is not produced just like when I ran it in Pro. I will include the code below that works when I do everything through ArcMAP.
I'm thinking that the layer file can be created successfully in memory using the 2.x version of python that ArcMAP uses, but it can't be created with the 3.x version that Pro uses. I feel like when it gets on the ArcGIS server the version of python used must be somehow connected to which client it was published from. Any thoughts? Could this just be a bug?
# Import Modules ----------------------------------------------------------------------------------------------------------------------
import arcpy, os
# -------------------------------------------------------------------------------------------------------------------------------------
arcpy.env.overwriteOutput = True
outFolder = arcpy.env.scratchFolder
featureLayer = arcpy.GetParameter(0)
outPutName = arcpy.GetParameterAsText(1)
kmzFile = os.path.join(outFolder, "{0}.kmz".format(outPutName))
arcpy.MakeFeatureLayer_management(featureLayer, outPutName)
arcpy.LayerToKML_conversion(outPutName, kmzFile)
arcpy.AddMessage(kmzFile)
