Update app.py

app.py

@@ -31,7 +31,7 @@ def invoke(prompt):
     completion = ""
     
     try:
-        modelId = config["model"]
+        model_id = config["model"]
         model_kwargs =  { 
             "max_tokens": 2048, "temperature": 0.1,
             "top_k": 250, "top_p": 1, "stop_sequences": ["\n\nHuman"],