Help Paperspigot Suddenly not working

[Heeooo]

Hello! I need help! I wll vouch you! When ever I try to run my paperspigot. It does not work. It saids, no main manifest attribute, in TheCore.jar PLEASE HELP!!! add me on skype! Heo2752

 

[Kuno]

Wait, I don't get what you are trying to say is it PaperSpigot that says "no main manifest attribute" or TheCore.jar?

 

[Heeooo]

Wait, I don't get what you are trying to say is it PaperSpigot that says "no main manifest attribute" or TheCore.jar?

the paperspigot is named TheCore.jar. When ever I try to run it, it saids, "no main manifest attribute, in TheCore.jar"