Fix: delay spaces import until after GPU functions are defined

gradio_app.py

@@ -64,7 +64,7 @@ if ENV == 'Huggingface':
         This setup assumes the script is running in the Huggingface environment 
         with the specified directory structure.
     """
-    import os, spaces, subprocess, sys, shlex
+    import os, subprocess, sys, shlex
     
     print("Installing custom_rasterizer...")
     subprocess.run(