mono: failed to load dll

when i build my game i send it to my friends and they say that it dosnt work and it says mono: failed to load dll what happened and how do you fix it ?
thanks

Don’t forget to give them all the files, including YourGameName_Data folder and its content.

edit: basically the .exe file is almost the same for every game. All the game content (assets, scenes, DLLs…) is inside the Data directory.