server.js: small temporary workaround

dist/server.js

@@ -354,6 +354,8 @@ On Exit: {{onexit}}<br>
 
 function stodate(value) {
     var date = new Date(0);
+    // Workaround an incompatibility with a temporary version, you can remove this "if"
+    if (value !== undefined) date.setSeconds(value);
     date.setSeconds(value);
     var timeString = date.toISOString().substring(11, 19);
     return timeString;