Fix url encoding and error catching

packages/knowledge-base-web-page-element-view/vpu-kb-wpe-view.js

@@ -38,7 +38,8 @@ class VPUKnowledgeBaseWebPageElementView extends VPULitElement {
         // });
 
         // sadly there there is no entity url without "collectionOperations" in entity KnowledgeBaseWebPageElement!
-        const apiUrl = utils.getAPiUrl("/web_page_elements/knowledge_base_web_page_elements/") + commonUtils.base64EncodeUnicode(that.value);
+        const apiUrl = utils.getAPiUrl("/web_page_elements/knowledge_base_web_page_elements/") +
+            encodeURIComponent(commonUtils.base64EncodeUnicode(encodeURIComponent(that.value)));
 
         window.addEventListener("vpu-auth-init", function(e)
         {
@@ -55,7 +56,7 @@ class VPUKnowledgeBaseWebPageElementView extends VPULitElement {
                     }
                 })
                 // catch e.g. 404 errors
-                .catch(error => console.error(error));
+                .catch();
         });
 
         this.updateComplete.then(()=>{