Update api.py

api.py

@@ -21,7 +21,7 @@ def generate(req: PromptRequest):
         res = requests.post(
             "http://localhost:11434/api/generate",
             json={
-                "model": req_model, 
+                "model": req.model, 
                 "prompt": f"{req.persona}\n\n{req.text}",
                 "stream": False,
                 "options": {