Handle invalid JSON in call_api function

app.py

@@ -58,7 +58,11 @@ def call_api(history, max_tokens, temperature, top_p, system_message="", seed=42
         if line:
             decoded_line = line.decode("utf-8").strip()
             if decoded_line.startswith("data:"):
-                json_data = json.loads(decoded_line[5:])
+                try:
+                    json_data = json.loads(decoded_line[5:])
+                except json.JSONDecodeError:
+                    print(f"Invalid JSON: {decoded_line[5:]}")
+                    json_data = {}
                 if "choices" in json_data and len(json_data["choices"]) > 0:
                     deltas = json_data["choices"][0].get("delta", {})
                     if "content" in deltas: