Update app.py

app.py

@@ -111,7 +111,7 @@ def preprocess_image(image_array, session_id):
     saved_image_path = os.path.join(os.environ["PIXEL3DMM_PREPROCESSED_DATA"], session_id, f"{session_id}.png")
     img.save(saved_image_path)
 
-    from pixel3dmm.preprocessing import facer
+    import facer
 
     if "face_detector" not in _model_cache: