Need Help with a Juniper Switch Issue

I'm not sure if this is simple problem I don't get, but I'm still just a CCENT, low level network admin so any help would be appreciated. So I had a switch deployed and working. It was two Juniper 3400s, a 24 and 48. The 24 being the master in the virtual chassis. For some reason, the switch entered a weird mode upon login. The switch worked fine, passing traffic, but anytime you logged in, the prompt would just be ">". Now to my knowledge, the shell is signified by "root@host%" so this isn't the shell. I couldn't get past this prompt, and rather than try more troubleshooting on a live switch, I just replaced the switch with new ones. After some research, I still have no clue what to do. Here's a picture of the prompt. https://imgur.com/a/UvUB0U3

Oddly enough, the 48 port in the virtual chassis came up just fine when disconnected from the virtual chassis. I tried wiping it and creating a virtual chassis with it as the master, but when I brought up the two together, then disconnected the 24 and logging in separately, the same issue came back.