**Steps to replicate the issue** (include links if applicable):
Update MediaWiki to version 1.43.4 or 1.43.5.
**What happens?**:
The following tagged PHP code is not highlighted:
```
<syntaxhighlight lang="php" line>
<?php
$v = "string_test"; // sample initialization
?>
html text
<?
echo $v; // end of php code
?>
</syntaxhighlight>
```
Debug logs show that pygmentize is failing to load:
> File "/usr/lib64/python3.6/runpy.py", line 193, in _run_module_as_main
> "__main__", mod_spec)
> File "/usr/lib64/python3.6/runpy.py", line 85, in _run_code
> exec(code, run_globals)
> File "/var/www/wiki/wiki_sandbox/extensions/SyntaxHighlight_GeSHi/includes/../pygments/pygmentize/__main__.py", line 4, in <module>
> File "/var/www/wiki/wiki_sandbox/extensions/SyntaxHighlight_GeSHi/includes/../pygments/pygmentize/pygments/cmdline.py", line 21, in <module>
> File "/var/www/wiki/wiki_sandbox/extensions/SyntaxHighlight_GeSHi/includes/../pygments/pygmentize/pygments/lexers/__init__.py", line 19, in <module>
> File "/var/www/wiki/wiki_sandbox/extensions/SyntaxHighlight_GeSHi/includes/../pygments/pygmentize/pygments/plugin.py", line 35, in <module>
> ModuleNotFoundError: No module named 'importlib.metadata'
>
**What should have happened instead?**:
Code should be colorized. Works correctly with MediaWiki 1.43.3 or with external pygmentize.
**Software version** (on `Special:Version` page; skip for WMF-hosted wikis like Wikipedia):
MediaWiki 1.43.5
**Other information** (browser name/version, screenshots, etc.):
1.43.5
{F66736663}
1.43.3
{F66736668}