Index: graphspell-js/helpers.js
==================================================================
--- graphspell-js/helpers.js
+++ graphspell-js/helpers.js
@@ -12,11 +12,11 @@
         let sMsg = "__inspect__: " + typeof o;
         for (let sParam in o) {
             sMsg += "\n" + sParam + ": " + o.sParam;
         }
         sMsg += "\n" + JSON.stringify(o) + "\n__end__";
-        this.echo(sMsg);
+        console.log(sMsg);
     },
 
     loadFile: function (spf) {
         // load ressources in workers (suggested by Mozilla extensions reviewers)
         // for more options have a look here: https://gist.github.com/Noitidart/ec1e6b9a593ec7e3efed
@@ -28,11 +28,11 @@
             xRequest.overrideMimeType('text/json');
             xRequest.send();
             return xRequest.responseText;
         }
         catch (e) {
-            this.logerror(e);
+            console.error(e);
             return null;
         }
     },
 
     // conversions