Springtail Infestation in my Isopod Terrarium

I’ve had this isopod terrarium for over a year now and this is the first time this has happened. It has been like this for less than a day, from what I remember seeing. Online, I couldn’t find much help, they just said if it’s too moist or if there’s too much food in there this could happen, but I’ve had times where it’s been much more moist and there was much more food and this has never happened. There are thousands of springtails and they’re crawling out of the terrarium and out onto other objects. Please let me know any advice you may have. Anything helps, thanks!