Account image URL is null if unset

src/api_data/admin/admin_search_user_result_api.rs

@@ -10,7 +10,7 @@ pub struct AdminSearchUserResult {
     first_name: String,
     last_name: String,
     email: String,
-    account_image: String
+    account_image: Option<String>
 }
 
 impl AdminSearchUserResult {

src/api_data/admin/admin_user_info_api.rs

@@ -16,7 +16,7 @@ pub struct AdminUserInfoAPI {
     last_activity: u64,
     page_visibility: &'static str,
     directory: Option<String>,
-    account_image: String,
+    account_image: Option<String>,
     account_image_visibility: String,
     friend_list_public: bool,
     is_email_public: bool,

src/data/user.rs

@@ -182,11 +182,11 @@ impl User {
 
     /// Get the URL pointing to a user account image for an administrator. An administrator can
     /// only access to the user account image if it is visible to all Comunic users
-    pub fn account_image_url_for_admin(&self) -> String {
+    pub fn account_image_url_for_admin(&self) -> Option<String> {
         match (&self.account_image_visibility, &self.account_image_path) {
-            (AccountImageVisibility::FRIENDS, _) => User::error_account_image_url(),
-            (_, None) => User::default_account_image_url(),
-            (_, Some(path)) => user_data_url(path),
+            (_, None) => None,
+            (AccountImageVisibility::FRIENDS, _) => Some(User::error_account_image_url()),
+            (_, Some(path)) => Some(user_data_url(path)),
         }
     }