Error Call to a member function label() on string

added changes for fix the issue. please kindly review the Patch file

Hi abhishek_gupta1
I think you can change here

elseif ($type === 'webform' && !empty($data['webform'])) {

    /** @var \Drupal\webform\WebformInterface $webform */
    if ($data['webform'] instanceof WebformInterface) {
      $webform = $data['webform'];
    }
    else {
      $webform = $data['webform_submission'];
    }

Because $webform is object and use in foreach loop.

Thanks

Please provide the steps required to reproduce this.

If possible, please create an example webform that can be used to replicate the issue.