Pomo folder

Hi all,
I can’t access my wp blog or wp-admin anymore.
There isn’t any error message, just a white page when I try to load the page.

I think it may have to do with me deleting the “pomo” folder (wp-includes/pomo/), because I first read something about this being malware.. but the pomo folder actually is from some plugin, is that right?
Does anyone know which plugin that could be – and if this could’ve likely caused the error? If yes, is there a way to restore the pomo folder? (I didn’t make a backup, unfortunately)

Other than that, I don’t think I’ve changed anything, so I’m a bit lost at the moment.. :/

Thanks so much in advance for any help!
Julia