Good Morning,
We are aware that users are currently unable to add files to Moodle. This includes preventing students from submitting assignments and keeping instructors from adding documents to courses. We'll work this morning to resolve everything as quickly as we are able and will let you know when full functionality is running again. We sincerely apologize for the disruption this has caused.
Best,
Josh
{Update: Everything is restored and back to normal. Thank you for your patience.}