glTF exporter: fix error message if hook failed

Pull Request: https://projects.blender.org/blender/blender/pulls/127451

scripts/addons_core/io_scene_gltf2/__init__.py

@@ -5,7 +5,7 @@
 bl_info = {
     'name': 'glTF 2.0 format',
     'author': 'Julien Duroure, Scurest, Norbert Nopper, Urs Hanselmann, Moritz Becher, Benjamin Schmithüsen, Jim Eckerlein, and many external contributors',
-    "version": (4, 2, 64),
+    "version": (4, 2, 65),
     'blender': (4, 2, 0),
     'location': 'File > Import-Export',
     'description': 'Import-Export as glTF 2.0',

scripts/addons_core/io_scene_gltf2/io/exp/gltf2_io_user_extensions.py

@@ -13,5 +13,5 @@ def export_user_extensions(hook_name, export_settings, *args):
             try:
                 hook(*args, export_settings)
             except Exception as e:
-                export_settings['log'].error("Extension hook " + hook_name + " fails on " + extension)
+                export_settings['log'].error("Extension hook " + hook_name + " fails on " + extension.__module__)
                 export_settings['log'].error(str(e))