Custom Action doesn't save, I cant change It's name or content.

// Automatic FlutterFlow imports
import '/backend/backend.dart';
import '/backend/schema/structs/index.dart';
import '/flutter_flow/flutter_flow_theme.dart';
import '/flutter_flow/flutter_flow_util.dart';
import '/custom_code/actions/index.dart'; // Imports other custom actions
import '/flutter_flow/custom_functions.dart'; // Imports custom functions
import 'package:flutter/material.dart';
// Begin custom action code
// DO NOT REMOVE OR MODIFY THE CODE ABOVE!

import 'package:cloud_firestore/cloud_firestore.dart';

Future<List<DocumentReference>> newCustomAction(
    List<String>? documentPaths) async {
  // Convert a list of firebase documents path strings to a list of document references
  if (documentPaths == null) {
    return [];
  }
  List<DocumentReference> documentReferences = [];
  for (String path in documentPaths) {
    // Trim any whitespace
    String trimmedPath = path.trim();

    // Extract the documentID from the path
    // Assuming the format is '/collection/documentID', we get the last part
    String documentID = trimmedPath.split('/').last;

    // Create a DocumentReference using the documentID
    DocumentReference documentReference =
        FirebaseFirestore.instance.collection('sellers').doc(documentID);
    documentReferences.add(documentReference);
  }
  return documentReferences;
}