I created a server recently and I can't seem to craft. when you place a log and select wooden planks it goes back up to the craft result box. You're unable to get it. In every world it does this too. I tried looking for it it configs with no luck. Here's a list of my plugins.
Everything else seems fine. My friends don't lag at all. My upload is around 40.0 mbps. But I have no idea what could be making this. Maybe a plugin, essentials?