fixed submitting form

backend/routes/default/frontend.route.js

@@ -7,9 +7,8 @@ import { getAll25 } from "./frontend.data.js";
 
 router.post("/frontend", async (req, res) => {
   console.log(req.body);
-  const data = await getAll25();
-  console.log(data);
-  res.status(200);
+  // 204 = "No Content"; beendet die Response sauber ohne Body
+  res.sendStatus(204);
 });
 
 export default router;

frontend/src/pages/MainForm.tsx

@@ -204,16 +204,9 @@ export const MainForm = () => {
         <FormControlLabel control={<Checkbox />} label={t("transfer")} />
         <TextField required id="code" label={t("code")} variant="filled" />
         {isLoading && <CircularProgress />}
-        <button type="submit">
-          <Button
-            onClick={() => {
-              handleSubmit();
-            }}
-            variant="contained"
-          >
+        <Button type="submit" variant="contained" disabled={isLoading}>
           {t("submit")}
         </Button>
-        </button>
 
         {msg && (
           <Alert severity={msg.type}>