I use GistPress for embedding gists on this site. I prefer GistPress over the block editor’s built-in functionality of embedding a gist because GistPress does not use Javascript to embed. It also provides enhanced functionality such as limiting which lines to display and caching.
After a recent update, I starting getting PHP warnings:
Warning: DOMDocument::loadHTML(): Tag template invalid in Entity, line: 12 in /public_html/wp-content/plugins/gistpress-develop/includes/class-gistpress.php on line 466
After some searching, I found the answer on Stack Overflow.
There are 2 instances of loadHTML
in class-gistpress.php
:
- Line 466:
$dom->loadHTML( $html, LIBXML_HTML_NODEFDTD | LIBXML_HTML_NOIMPLIED );
- Line 558:
$dom->loadHTML( $html );
Add the following directly before each instance:
libxml_use_internal_errors( true );
And the following directly after each instance:
libxml_use_internal_errors( false );
Unfortunately, any updates to the plugin will overwrite these changes, but the plugin is stable and has not been updated for a couple of years.
I hope this helps someone else out there.