diff --git a/src/static/js/ui/UIGauge.mjs b/src/static/js/ui/UIGauge.mjs
index e3d3505..6fb3e50 100644
--- a/src/static/js/ui/UIGauge.mjs
+++ b/src/static/js/ui/UIGauge.mjs
@@ -1,6 +1,7 @@
 "use strict";
 
 import Emel from 'emel';
+import forkawesome_emel from './forkawesome_emel.mjs';
 import ApexCharts from 'apexcharts';
 
 import AbstractUIItem from './AbstractUIItem.mjs';
@@ -98,6 +99,9 @@ class UIGauge extends AbstractUIItem {
 				break;
 			default:
 				console.warn(`Warning: Unknown UIGauge content type '${typeof this.def.content}' for def with name '${this.def.name}'.`);
+				this.el.querySelector(".container-gauge").replaceChildren(
+					this.emel(`div[class="message-error"]>${forkawesome_emel("exclamation-circle")}+{Oops! An error occurred while rendering this chart. Check the developer tools for more information.}`)
+				)
 				return false;
 		}