Update app.py

app.py

@@ -238,7 +238,7 @@ def chat(user_input):
 with gr.Blocks(css=custom_css) as demo:
     
     pdf_input = gr.File(label="اختر ملف PDF")
-    output_label = gr.HTML()  # Replaced Textbox with HTML for label
+    output_label = gr.HTML("")  # Replaced Textbox with HTML for label
     submit_button_pdf = gr.Button("ارفع الملف", interactive=False)
     chat_input = gr.Textbox(label="أدخل سؤالك هنا", interactive=False)
     chat_output = gr.Textbox(label="الرد الآلي", interactive=False)