Warning: DOMDocumentFragment::appendXML()

Problem/Motivation

When adding text with a tag and an image () tag to a taxonomy term, you should see the following warning pop up multiple times when viewing the page:

Warning: DOMDocumentFragment::appendXML(): ^ in Drupal\onomasticon\Plugin\Filter\FilterOnomasticon->process() (line 109 of /code/web/modules/contrib/onomasticon/src/Plugin/Filter/FilterOnomasticon.php)

The issue mentioned above worked fine with Drupal core version 10.1.8. However, after upgrading to any version greater than 10.2, the warnings described above have started appearing.

Steps to reproduce

Add image() and include text within a tag. You should see the warning pop up multiple times when viewing the page.

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes