Spigot wont copy to server

I have a problem with the webui and spigot when I build the buildtools.jar then download the 1.11.2 spigot file after that I pressed copy to server and selected my server it didnt copy it only copied the buildtools.jar not the spigot i dont know if this is user error or mineos error so please help I am very eager to fix this

Did the build actually succeed? Have you reviewed the logging for it?