diff --git a/chatsim/agents/foreground_rendering_agent.py b/chatsim/agents/foreground_rendering_agent.py
index 5be7981..2eda433 100644
--- a/chatsim/agents/foreground_rendering_agent.py
+++ b/chatsim/agents/foreground_rendering_agent.py
@@ -98,7 +98,8 @@ def func_blender_add_cars(self, scene):
             # parallel rendering process for all frames
             print(f'start rendering in parallel, process number is {scene.multi_process_num}.')
             print('This may take a few minutes. To speed up the foreground rendering, you can lower the `frames` number or render not-wide images.')
-            print('If you find the results are incomplete, that may due to OOM. You can reduce the multi_process_num in config yaml.')
+            print('If you find the results are incomplete or missing, that may due to OOM. You can reduce the multi_process_num in config yaml.')
+            print('You can also check the log file for debugging with `save_cache` enabled in the yaml.')
             self.func_parallel_blender_rendering(scene)
 
             print(f"{colored('[Blender]', 'magenta', attrs=['bold'])} Finish rendering {real_render_frames} images.")
@@ -413,4 +414,4 @@ def update_depth_batch_SAM(self, scene, image_list):
             overlap_depth_list.append(overlap_depth.astype(np.float32))
 
         return overlap_depth_list
-        
\ No newline at end of file
+