Update app.py

app.py

@@ -54,7 +54,7 @@ class GeminiModel:
             # Return a dictionary that CodeAgent expects
             return {"content": response.candidates[0].content.parts[0].text.strip()}
         except Exception as e:
-            return {"content": f"Error during Gemini call: {str(e)}"}"
+            return {"content": f"Error during Gemini call: {str(e)}"}
 
 # Define BasicAgent properly
 class BasicAgent: