Prevent clubbing of server side error messages on top I have inline form errors module enabled on my drupal 8 site. The server-side errors that appear on form submission are appearing as clubbed together like below:


How to change this error language and prevent clubbing for example if there would have been multiple errors the message would have been "2 errors have been found: FieldName1, FieldName2".

Is it a part of core and how to show errors in different lines?
You can disable that module to return to the more traditional line-by-line error output globally, or hook into it programatically form-by-form:

function MODULE_form_alter(&amp;$form, FormStateInterface $form_state, $form_id) {
  if ($form_id == 'foo_form') {
    $form['#disable_inline_form_errors'] = TRUE;
  }
}