Fix import error by patching is_torch_fx_available function

app.py

@@ -2,6 +2,14 @@ import gradio as gr
 import torch
 from transformers import AutoTokenizer, AutoModelForCausalLM
 import os
+# Patch for missing is_torch_fx_available function
+try:
+    from transformers.utils import is_torch_fx_available
+except ImportError:
+    print("Patching missing is_torch_fx_available function...")
+    import transformers.utils
+    transformers.utils.is_torch_fx_available = lambda: False
+
 
 print("Starting model loading...")
 print(f"CUDA available: {torch.cuda.is_available()}")