Using the arcpy.da.Describe() function on a group layer with multiple layers within ends with a hard crash in ArcGIS Pro.

Additional Information

Workaround

As a workaround there are two options:

Use the arcpy.Describe command with the following result:

desc = arcpy.Describe(lyr)

print(desc)

>>> <geoprocessing describe data object object at 0x0000029FAADF2D10>

Use the arpy.da.Describe in the following way:

aprx = arcpy.mp.ArcGISProject("CURRENT")

m = aprx.activeMap

lyr = m.listLayers()[0]

print(lyr.name)

>>> TEST_PY

desc_da = arcpy.da.Describe(lyr)

print(desc_da)

>>> {'catalogPath': 'TEST_PY', 'FIDSet': None, 'children': [{'catalogPath': '', 'FIDSet': None, 'aliasName': '', 'attributeRules': [], 'baseName': '', …

and so on

Steps to Reproduce