some of the errors are not from quests but i also see some from quests i believe http://pastebin.com/MfimW6Nv

i also have this glitch where players sometimes get glitched out and the rewards from a quest spam on them here is a log: http://pastebin.com/pgBvSPE8

You are correct that Quests is mentioned but I see a number of errors from other plugins in both of your error logs (including an error from PhatLoots which is a dependency and may affect how Quests performs).

I suggest starting with fixing your PhatLoots error and then a fresh install of the latest version of Quests. If your issue persists, please create a new ticket.