diff --git a/frontend/src/ts/ervu/component/button/ExtractLoadService.ts b/frontend/src/ts/ervu/component/button/ExtractLoadService.ts
index a9b1feb..4efc0a8 100644
--- a/frontend/src/ts/ervu/component/button/ExtractLoadService.ts
+++ b/frontend/src/ts/ervu/component/button/ExtractLoadService.ts
@@ -26,7 +26,9 @@ export class ExtractLoadService extends Behavior {
     super.initialize();
     this.button = this.getScript(AbstractButton);
     this.httpClient = this.injector.get(HttpClient);
+    this.errorEvent.subscribe(() => console.log("error event occurred", this.errorEvent));
     this.onClickFunction = () => {
+      console.log("click event occurred");
       this.httpClient.get('extract/' + this.formatRegistry, {
         responseType: 'blob',
         observe: 'response'