PHP 8.1 compatibility: preg_split

Better one and catch some more...

Yahtzee! No more errors. :D I could use some help just to make sure this patch doesn't introduce any issues I'm not seeing...

webform.settings.element.allowed_tags should not be NULL.

I think there is something wrong with your webform.settings.yml file.

@see https://git.drupalcode.org/project/webform/-/blob/6.1.x/config/install/w...

Not sure what I should be looking for in that file. I created the worform from a standing start and had errors off the bat - wasn't anything I imported, this is a brand new start. Anyway, adjusted patch here.

I am not able to reproduce this issue via a clean installation.

I'm facing the same problem and the patch at #6 can fix the problem.
I'm using webform version 6.2.0-beta6.

As I mentioned in the previous comment, when the patch #6 can fix the problem. However, this patch will trgger new warning message:

Warning: Undefined array key "#allowed_tags" in Drupal\webform\Plugin\WebformElementBase->prepare() (line 813 of modules/contrib/webform/src/Plugin/WebformElementBase.php).

Therefore, I've uploaded a new patch to address this new issue.

I think the allowed_tags is missing in your webform.settings.yml.

Please run the repair command via the UI (/admin/structure/webform/config/advanced) or Drush (drush webform:repair)