"Two Seasons: Summer - Autumn 2018". Online Games.

Everything was good except for the hero without earth element.

Everything was fine except for the hero with the earth element and resource, who said - yeah, I can already take down these jellyfish. :D

In general, it seems like something was wrong with the jellyfish. If I'm not mistaken, they should have had a value of 10k in the area around level 37. But there were 46 of them.
There were definitely no resources nearby.