Update app.py

app.py

@@ -98,7 +98,7 @@ def query_vectara(question, chat_history, uploaded_file=None):
 # Create a Gradio ChatInterface with a text input and an optional file upload input
 iface = gr.Interface(
     fn=query_vectara,
-    inputs=[gr.Textbox(label="Input Text"), gr.File(label="Upload a file", required=False)],
+    inputs=[gr.Textbox(label="Input Text"), gr.File(label="Upload a file")],
     outputs=gr.Textbox(label="Output Text"),
     title="Vectara Chatbot",
     description="Ask me anything using the Vectara API!"