Got a lot of mods.. but playing vanilla (no space-age).
Got this on starting map:

The mod Islands World Reworked (2.1.1) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event islands_world_reworked::on_init()
LuaTile API call when LuaTile was invalid.
stack traceback:
[C]: in function 'index'
__islands_world_reworked/control.lua:148: in function 'is_land_tile'
islands_world_reworked/control.lua:241: in function 'build_spawn_island'
islands_world_reworked/control.lua:389: in function 'ensure_starting_resources'
islands_world_reworked/control.lua:449: in function <islands_world_reworked/control.lua:447>