If nothing is happening, then it shouldn’t mean anything out of the ordinary, as the game is still in alpha and many errors are to be fixed. However, if you want to report the error you should put this in the “Active Bug / Support”
If you click on the error in the red box, a black box will appear with more details on the specific error. Might help @sdee or whoever nail down what it is exactly.
Some module is trying to fire a task through town.lua before town.lua has initialized the task groups that assign people to things. I know this happens sometimes when you save/load and have farms. It could happen other times too.
Edit: can you mention what version of the game you’re running?
I start new games all the time, mixing this mod or that or none, just most errors I see don’t keep popping up after the initial notification, this one pops after loading any save of this one game, build couple houses, saved, loaded and it’s there.
Isn’t a big deal, if a game gives me to many errors or really bug out the little people, I start a new one