Fix face swapping crash due to None face embeddings

- Add explicit checks for face detection results (source and target faces).
- Handle cases when face embeddings are not available, preventing AttributeError.
- Provide meaningful log messages for easier debugging in future scenarios.

modules/processors/frame/face_swapper.py

@@ -105,14 +105,20 @@ def process_frame(source_face: Face, temp_frame: Frame) -> Frame:
         many_faces = get_many_faces(temp_frame)
         if many_faces:
             for target_face in many_faces:
+                if source_face and target_face:
                     temp_frame = swap_face(source_face, target_face, temp_frame)
+                else:
+                    print("Face detection failed for target/source.")
     else:
         target_face = get_one_face(temp_frame)
-        if target_face:
+        if target_face and source_face:
             temp_frame = swap_face(source_face, target_face, temp_frame)
+        else:
+            print("Face detection failed for target or source.")
     return temp_frame
 
 
+
 def process_frame_v2(temp_frame: Frame, temp_frame_path: str = "") -> Frame:
     if is_image(modules.globals.target_path):
         if modules.globals.many_faces: