error handling

frontend/src/scripts/index.js

@@ -97,6 +97,12 @@ class Main extends Component {
                     window.open(data.redirect ,"_self")
                 }
             }
+        }).catch((error) => {
+            this.setState({
+                progress: false,
+                text: "Chyba: " + error.status +", " + error.statusText,
+                status: "failed",
+            })
         });
     }
     togglefaq(){