i cant place a block

like where?

Please follow the guidelines and give more details about your problem.

Sorry for not following the guidelines.

Here is a video of what happened [yt:eX3waOGdUII]

Block 36 might be there from a previous piston. (That might happen with worldedit) i think pushing a block into that space with a piston should fix it. If that wont work, use worldedit to set air into that space.

ty, I tried pushing a block into the space, but I haven’t tried setting it with air yet.

setting it with air werked.