Server Crashed and I don't know coding

So I've been trying to put mods into my server, specifically Just Enough Items mods and Tinkers Construct mods. I got the forge installed, the correct versions, followed all the instructions in the tutorial video, but it still doesn't work. I can't read code, so here's the log if you can find out what's wrong. https://mclo.gs/FUfGDyh