Fatal error: Call to undefined function Alchemy\Zippy\mb_strtolower() in /home/

https://github.com/benbalter/wordpress-to-jekyll-exporter/blob/master/vendor/alchemy/zippy/src/Alchemy/Zippy/Zippy.php

File appears to be here:

* https://github.com/benbalter/wordpress-to-jekyll-exporter/blob/master/vendor/alchemy/zippy/src/Zippy.php

It’s from this vendor package:

* https://github.com/alchemy-fr/Zippy

It didn’t occur to me straight away, but this issue is likely because mbstring isn’t installed on this server.

There appears to be no mention of mbstring in the documentation:

* https://zippy.readthedocs.org/en/latest/

Issue raised here:

* https://github.com/alchemy-fr/Zippy/issues/98