Fix session user avatar display

src/models/user/mod.rs

@@ -129,7 +129,9 @@ impl SessionUser {
             USER_DISCRIMINATOR_COOKIE,
             user.discriminator.to_string(),
         ));
-        cookies.add_private(Cookie::new(USER_AVATAR_COOKIE, user.avatar()));
+        if let Some(avatar) = &user.avatar {
+            cookies.add_private(Cookie::new(USER_AVATAR_COOKIE, avatar.clone()));
+        }
         Ok(Self(user))
     }
 
@@ -147,7 +149,7 @@ impl SessionUser {
             id: parse_cookie_value(cookies, USER_ID_COOKIE)?,
             name: parse_cookie_value(cookies, USER_NAME_COOKIE)?,
             discriminator: parse_cookie_value(cookies, USER_DISCRIMINATOR_COOKIE)?,
-            avatar: Some(parse_cookie_value(cookies, USER_AVATAR_COOKIE)?),
+            avatar: parse_cookie_value(cookies, USER_AVATAR_COOKIE),
             deleted: false,
         }))
     }