Update app.py

app.py

@@ -6,6 +6,16 @@ st.title("AI Accountant - Prompt-Based ERP Entry")
 
 model_path = os.path.abspath("finetuned-flan-t5")
 
+# Check if tokenizer files exist → if not, download them
+required_files = ["tokenizer_config.json", "special_tokens_map.json", "spiece.model"]
+missing_files = [f for f in required_files if not os.path.exists(os.path.join(model_path, f))]
+
+if missing_files:
+    st.info("Tokenizer files missing. Downloading tokenizer from base model...")
+    tokenizer_dl = AutoTokenizer.from_pretrained("google/flan-t5-large")
+    tokenizer_dl.save_pretrained(model_path)
+    st.success("Tokenizer files downloaded.")
+
 tokenizer = AutoTokenizer.from_pretrained(model_path, local_files_only=True)
 model = AutoModelForSeq2SeqLM.from_pretrained(model_path, local_files_only=True)