added print debugger

app.py

@@ -153,8 +153,11 @@ def generate_3d_model(depth, image_path, focallength_px, simplification_factor=0
     timestamp = int(time.time())
     view_model_path = f'view_model_{timestamp}.obj'
     download_model_path = f'download_model_{timestamp}.obj'
+    print("gonna export to view!")
     mesh.export(view_model_path)
+    print("gonna export to download!")
     mesh.export(download_model_path)
+    print("exported!")
     return view_model_path, download_model_path
 
 def remove_thin_features(mesh, thickness_threshold=0.01):
@@ -191,7 +194,7 @@ def regenerate_3d_model(depth_csv, image_path, focallength_px, simplification_fa
         depth, image_path, focallength_px, 
         simplification_factor, smoothing_iterations, thin_threshold
     )
-    
+    print("regenerated!")
     return view_model_path, download_model_path
 
 @spaces.GPU(duration=20)
@@ -225,7 +228,7 @@ def predict_depth(input_image):
         np.savetxt(raw_depth_path, depth, delimiter=',')
 
         view_model_path, download_model_path = generate_3d_model(depth, temp_file, focallength_px)
-
+        print("Depth created - 3D model generated!")
         return output_path, f"Focal length: {focallength_px:.2f} pixels", raw_depth_path, view_model_path, download_model_path, temp_file, focallength_px
     except Exception as e:
         import traceback