Can’t install due to error

Has it ever worked for you before? If I was to make a stab in the dark, I’m wondering if another plugin is using the Sanitizer class and perhaps it is out-of-date.

I’ve had this issue with plugins that autoload dependencies. Let’s say 2 plugins require a piece of code, but one author hasn’t updated it in ages. Eventually there are deprecation issues galore.

That’s just a theory, though. The only way to know for sure would be a find+replace and disable other plugins, reactivating them one at a time to see if one collides.

Thank you Hendridm for your fast response!

Anyways, no, it’s a fresh installation. I tried disabling all plugins and even changed to TwentySeventeen from the custom theme I have installed, but it didn’t work.

However, now that I think about it, I’m using EWWW Image Optimizer, and it found out I didn’t have some image libraries installed (which I installed later). Is it possible that I’m missing some other library here? And if so, what should I look for?

Hi @fdevin,

Yep, you’re correct in thinking that it’s a missing library. DOMDocument is what’s used by the sanitiser to work it’s way through the SVG file (https://php.net/manual/en/class.domdocument.php).

This is something that will need to be installed for the sanitiser to work at all but should exist by default in all PHP 5+ versions.

Do you know what PHP version you’re using. If it’s a 5.x or 7.x version then it should just be a case of installing the DOM extension into PHP as answered in this Stack Overflow question: https://stackoverflow.com/questions/14395239/class-domdocument-not-found.

Hope that helps ??

Daryll

Thank you Daryl, I think that is the case because I see I don’t have DOM installed. Sadly I don’t have root accesst o CentOS so I’ll need to wait, but I’m almost sure this is what I need, thank you again! ??