So, I might've been stupid, and unsubscribed to this mod while I had Locked Ship Doors in my ship, and now they're just nothing spaces that I can't go through at all— I used "/entityeval object.smash()" in admin mode and even checked "/boxes" and it shows there's nothing there, but I still can "mine" it with no luck since it's not breaking

Like, how do I fix this?

I honestly do not know, I have not touched Starbound in four years. I can only think to re-install the mod and then remove the doors and then uninstall the mod again.

I have tried exactly that, and it still persisted, like, I reinstalled the mod and the “doors” were still gone and that area still dead space that I can't go through or mine

Okay, so, I finally fixed the issue by downloading this mod and using it as instructed. It finally got rid of the ghost blocks, and now I can place, destroy, use items where the doors used to be. Just wanted to give an update for clarification and transparency:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=755391531

Found out via this Steam discussion what the issue was which then directed me to the mod in question, again, just wanted to give some clarity and transparency:
https://steamhost.cn/steamcommunity_com/app/211820/discussions/3/1694920442941135111/#c1694920442943107096