Fix Gradio avatar emoji error and upgrade to v4.44.0

gradio_app.py

@@ -249,7 +249,7 @@ with gr.Blocks(css=css, title="Question Generation AI", theme=gr.themes.Soft())
                 elem_id="chatbot",
                 label="Chat",
                 show_label=False,
-                avatar_images=(None, "🤖"),
+                avatar_images=(None, None),
                 bubble_full_width=False,
                 show_share_button=False
             )

requirements.txt

@@ -11,4 +11,4 @@ python-multipart==0.0.6
 numpy>=1.24.0
 sentencepiece>=0.1.99
 protobuf>=3.20.0
-gradio>=4.0.0
+gradio>=4.44.0