glTF exporter: avoid crash when apply modifiers + shapekeys

io_scene_gltf2/__init__.py

@@ -4,7 +4,7 @@
 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": (3, 4, 17),
+    "version": (3, 4, 18),
     'blender': (3, 3, 0),
     'location': 'File > Import-Export',
     'description': 'Import-Export as glTF 2.0',

io_scene_gltf2/blender/exp/gltf2_blender_extract.py

@@ -81,7 +81,8 @@ def extract_primitives(blender_mesh, uuid_for_skined_data, blender_vertex_groups
     use_morph_tangents = use_morph_normals and use_tangents and export_settings[gltf2_blender_export_keys.MORPH_TANGENT]
 
     key_blocks = []
-    if blender_mesh.shape_keys and export_settings[gltf2_blender_export_keys.MORPH]:
+    # Shape Keys can't be retrieve when using Apply Modifiers (Blender/bpy limitation)
+    if export_settings[gltf2_blender_export_keys.APPLY] is False and blender_mesh.shape_keys and export_settings[gltf2_blender_export_keys.MORPH]:
         key_blocks = [
             key_block
             for key_block in blender_mesh.shape_keys.key_blocks