file dir retry fix

app.py

@@ -104,6 +104,7 @@ def text_to_3d(
         str: The path to the video of the 3D model.
     """
     user_dir = os.path.join(TMP_DIR, str(req.session_hash))
+    os.makedirs(user_dir, exist_ok=True)
     outputs = pipeline.run(
         prompt,
         seed=seed,
@@ -144,6 +145,7 @@ def extract_glb(
         str: The path to the extracted GLB file.
     """
     user_dir = os.path.join(TMP_DIR, str(req.session_hash))
+    os.makedirs(user_dir, exist_ok=True)
     gs, mesh = unpack_state(state)
     glb = postprocessing_utils.to_glb(gs, mesh, simplify=mesh_simplify, texture_size=texture_size, verbose=False)
     glb_path = os.path.join(user_dir, 'sample.glb')
@@ -162,6 +164,7 @@ def extract_gaussian(state: dict, req: gr.Request) -> Tuple[str, str]:
         str: The path to the extracted Gaussian file.
     """
     user_dir = os.path.join(TMP_DIR, str(req.session_hash))
+    os.makedirs(user_dir, exist_ok=True)
     gs, _ = unpack_state(state)
     gaussian_path = os.path.join(user_dir, 'sample.ply')
     gs.save_ply(gaussian_path)