Log attached, error gets sent at seemingly random intervals, not sure if it actually does anything fatal. Ctrl+F also highlighted other various errors during startup, not sure if theyre related.
latest.log

Fixed in 1.1.2

I think that error gets sent whenever agressive mob attempts to spawn and prevent them from spawning

Edit: Also have same error

Could you post the log again? It seems to be unreachable

latest.log
I downloaded it earlier by some miracle

Hmm... still not working, try using mclogs maybe?

there you go https://mclo.gs/3Dkv3sI

edit: paste wrong logs xD

Looks like I updated a dependency and it removed something... I'll get a fix out for it soon

That being said, the
(Zenith : Adventure) Insufficient number of affixes to satisfy the loot rules (ignoring backup rules) of rarity zenith:uncommon for category shovelRequired: 3; Provided: 2
thing is not an issue

(Zenith : Adventure) Failed to execute LootRule minecraft:iron_pickaxe/zenith:uncommon/STAT/0.45! is also not an important issue as far as I know