Vacuum, random PO420 and PO430 codes

The piece that the hose connects to broke off and I'm trying to figure out what it’s called so I can replace it or if there’s another option? Some kind of way to drill a new hole and just run the hose through it. And also, it’s been disconnected for months now so I learned and I’m wondering if that could have caused damage to the catalyst converter because now, I’m getting random 420 and 430 po codes. Also, traction and VSC lights come and go. Or if it could just be that causing the codes.