Cant join my own server neither can others

i updated my server files, and the server acts like its loading in when you join it but then throws me back on the main menu

@Twillia1 MAKE SURE you are putting in the map name correctly and it is all lowercase!
EX: /levels/italy/info.json

ive tried that its still not working

hello please make sure the map is correct you can check by loading it in single player and executing print(getMissionFilename()) in the game console.

i have the same problem
pls help