Update app.py

app.py

@@ -101,7 +101,7 @@ def main():
                     tools.append(
                         Tool(
                             name="Comparison tool",
-                            description=f"useful when you want to answer questions about the uploaded documents}",
+                            description="useful when you want to answer questions about the uploaded documents",
                             func=RetrievalQA.from_chain_type(llm=llm, retriever=retriever),
                         )
                     )