Kleine fehler beseitigt

public/js/plan/plan-state.js

@@ -41,7 +41,12 @@ window.PlanApp = {
   app.department = routeMatch ? routeMatch[1] : (app.params.get('department') || 'ELT');
   app.weekLabel = app.params.get('weekLabel');
   app.projNr = app.params.get('projNr') || '';
-  app.projName = routeMatch && routeMatch[2] ? decodeURIComponent(routeMatch[2]) : (app.params.get('projName') || '');
+  let projNameFromRoute = '';
+  if(routeMatch && routeMatch[2]){
+    try { projNameFromRoute = decodeURIComponent(routeMatch[2]); }
+    catch(e) { projNameFromRoute = app.params.get('projName') || ''; }
+  }
+  app.projName = projNameFromRoute || (app.params.get('projName') || '');
 
   // init: Einstiegspunkt nach DOMContentLoaded. Übernimmt das Theme aus
   // localStorage/System, prüft die URL-Parameter und bricht mit Fehlermeldung