Database Update from 10.1 to 10.3 fails with:
[notice] Update started: views_post_update_pager_heading
> PHP Fatal error: Access level to Drupal\content_translation\Plugin\views\filter\UnTranslated::operators() must be public (as in class Drupal\views\Plugin\views\filter\BooleanOperator) in /core/modules/content_translation/src/Plugin/views/filter/UnTranslated.php on line 73
> [warning] Drush command terminated abnormally.
So, in /core/modules/content_translation/src/Plugin/views/filter/UnTranslated.php
we need to change
protected function operators() {
to
public function operators() {