How do I create a map? every time I save and create a server the map appears with invisible blocks, and if I want to open it again to edit it, it crashes.

I have been playing this game as often as I can since I got it and to be absolutely honest, this game is insanely addictive and fun. While I was grinding in the Gilded Spire just a few moments ago I started thinking about new weapon ideas for some of the characters just for the fun of it, so I've come here to share those ideas here and see what other people think about them or what other interesting ideas people have of their own. Now, to start Shazia The dream is my favorite character so far, they have a...

really why

i have tryed so meny times

how to save map?