Update app.py

app.py

@@ -1,6 +1,11 @@
 import os
 import logging
 from dotenv import load_dotenv
+import subprocess
+
+# Force reinstall Gradio
+subprocess.run(["pip", "install", "--upgrade", "gradio==4.44.1"])
+
 import gradio as gr
 import threading
 import time
@@ -287,8 +292,8 @@ def get_history_by_session_id(session_id):
 def get_llm(model: str):
     """Retrieve the specified language model based on the model name."""
     model = model.lower().strip()
-    env_key = f"LLM_MODEL_CONFIG_{model.replace('-', '_')}"
-    env_value = os.environ.get(env_key)
+    env_key = f"LLM_MODEL_CONFIG_{model.replace('-', '_').replace('.', '_')}"  # Replace both dashes and periods
+    env_value = os.environ.get(env_key.upper())
 
     if not env_value:
         err = f"Environment variable '{env_key}' is not defined as per format or missing"