diff --git a/frontend-js/src/main/js/gui/admin/MapsAdminPanel.js b/frontend-js/src/main/js/gui/admin/MapsAdminPanel.js
index 53c75d585ac0a7e22058092e60338b71e2701078..a2f7dbfd7333ad91e3e82e6201bdede48520efe1 100644
--- a/frontend-js/src/main/js/gui/admin/MapsAdminPanel.js
+++ b/frontend-js/src/main/js/gui/admin/MapsAdminPanel.js
@@ -152,4 +152,17 @@ MapsAdminPanel.prototype.setProjects = function(projects) {
   });
 }
 
+MapsAdminPanel.prototype.onAddClicked = function() {
+  return Promise.reject(new Error("Not implemented"));
+};
+MapsAdminPanel.prototype.onRefreshClicked = function() {
+  return Promise.reject(new Error("Not implemented"));
+};
+MapsAdminPanel.prototype.showEditDialog = function(id) {
+  return Promise.reject(new Error("Not implemented"));
+};
+MapsAdminPanel.prototype.removeProject = function(id) {
+  return Promise.reject(new Error("Not implemented"));
+};
+
 module.exports = MapsAdminPanel;