diff -r 77e01cda5a40 -r 1a3b998afba7 src/main/webapp/WEB-INF/dynamic_fragments/error.jsp
--- a/src/main/webapp/WEB-INF/dynamic_fragments/error.jsp	Sat May 16 16:14:10 2020 +0200
+++ b/src/main/webapp/WEB-INF/dynamic_fragments/error.jsp	Sat May 16 17:22:02 2020 +0200
@@ -54,7 +54,7 @@
         <c:if test="${not empty exception}">
         <tr>
             <th><fmt:message key="errorExceptionText" />:</th>
-            <td>${exception.class.name} - ${exception.message}</td>
+            <td>${exception['class'].name} - ${exception.message}</td>
         </tr>    
         </c:if>
         <c:if test="${fn:startsWith(returnLink, baseHref)}">