It's a conflicting plugin, but hard to say which. If you download a clean copy of the bot and only use that, you should not see the issue (as that's the baseline test I do after each update to make sure nothing breaks).
Based on the log, I see quite a few of the plugins you're using have issues. For example:
- DangerDodger has incorrect logging going on causing errors
- A plugin for Navali keeps on running (possibly check this as being the issue)
- The AlerterReloaded plugin you have is an old version not compatible with current EB
- Whatever else was in the middle.
After you get a clean copy, you can start re-adding content 1 by 1 to try and find the problematic one, but I think most development on community plugins came to a halt a while ago, as people are waiting for the next expansion and EB changes to take effect. I should note OldGrindBot will no longer be supported, so we'll be able to do a forum cleanup to avoid a long-standingi issue of old content still being around, but just not working with the current bot version. This game requires a lot of maintenance and changes frequently, so community content is purely volunteer work and after a while there's little incentive to keep things working as best as possible until the next expansion and set of EB changes.