Update app.py

app.py

@@ -39,7 +39,7 @@ avatar_images = {
     "arXiv Research Agent": "https://public.boxcloud.com/api/2.0/internal_files/804104772302/versions/860288648702/representations/png_paged_2048x2048/content/1.png?access_token=1!r4Iuj5vkFMywOMAPQ4M6QIr3eqkJ6CjlMzh77DAkRcGdVRvzG-Xh6GFZz_JkzoJuO9yRR5cQ6cs5VvUolhHxNM6JdliJ2JOi9VWm-BbB5C63s0_7bpaQYLFAJmLnlG2RzhX74_bK4XS-csGP8CI-9tVa6LUcrCNTKJmc-yddIepopLMZLqJ34h0nu69Yt0Not4yDErBTk2jWaneTBdhdXErOhCs9cz4HK-itpCfdL3Lze9oAjf6o8EVWRn6R0YPw95trQl7IziLd1P78BFuVaDjborvhs_yWgcw0uxXNZz_8WZh5z5NOvDq6sMo0uYGWiJ_g1JWyiaDJpsWBlHRiRwwF5FZLsVSXRz6dXD1MtKyOPs8J6CBYkGisicIysuiPsT1Kcyrgm-3jH1-tanOVs66TCmnGNbSYH_o_-x9iOdkI8rEL7-l2i5iHn22i-q8apZTOd_eQp22UCsmUBJQig7att_AwVKasmqOegDZHO2h1b_vSjeZ8ISBcg8i7fnFdF9Ej35s6OFkV5IyZtMzbAKdRlwdt5lupsshO5FCByR0kau9PVIiwJilI0t7zYsJtSXzVxVQEyEPuLTAlJJI7827NoNA1OSojaPsfhFrW4jEfJIgMoxNl_vFfZvLBmAA7Pk1SeaN7J0ebDji-bDbwqlPadp7JOB3s2Six11fm4Ss.&shared_link=https%3A%2F%2Fcornell.app.box.com%2Fv%2Farxiv-logomark-small-png&box_client_name=box-content-preview&box_client_version=3.7.0",
     "GitHub Research Agent": "https://upload.wikimedia.org/wikipedia/commons/thumb/c/c2/GitHub_Invertocat_Logo.svg/250px-GitHub_Invertocat_Logo.svg.png",
     "SEC EDGAR Research Agent": "https://upload.wikimedia.org/wikipedia/commons/thumb/1/1c/Seal_of_the_United_States_Securities_and_Exchange_Commission.svg/250px-Seal_of_the_United_States_Securities_and_Exchange_Commission.svg.png",
-    "Web Search Research Agent": "https://uxwing.com/wp-content/themes/uxwing/download/brands-and-social-media/duckduckgo-icon.png",
+    "Web Search Research Agent": "https://duckduckgo.com/static-assets/favicons/DDG-iOS-icon_76x76.png",
     "Wikipedia Research Agent": "https://upload.wikimedia.org/wikipedia/commons/thumb/8/80/Wikipedia-logo-v2.svg/103px-Wikipedia-logo-v2.svg.png"
 }