optimize gui loader

templates/admin/job/show.html.twig

@@ -81,7 +81,10 @@
 
             {# Fehlerbereich #}
             <div id="job-error"
-                 class="alert alert-danger mt-3 d-none">
+                 class="alert alert-danger mt-3 {% if not job.errorMessage %}d-none{% endif %}">
+                {% if job.errorMessage %}
+                    {{ job.errorMessage }}
+                {% endif %}
             </div>
 
         </div>
@@ -160,7 +163,7 @@
             // Initial render from server state
             renderBadge("{{ job.status|upper }}");
 
-            if (["QUEUED","RUNNING"].includes("{{ job.status|upper }}")) {
+            if (["QUEUED", "RUNNING"].includes("{{ job.status|upper }}")) {
                 loaderEl.classList.remove('d-none');
                 timer = setInterval(poll, 2000);
             }