Played mod with Sectorial mode and Challenge enabled set to 10 minutes, in single player.
Set to 2 teams, joined first team, then left the team, and joined 2nd team.
Once 10 minutes are up it crashes with this error on a room with what looks like infinity chests.

Other then required mods I only added the space age mods.

Took the save game created from single player and hosted it alone in private multiplayer game and got the same error.

Error:

The mod Team Competition (2.1.3) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event team_competition::on_nth_tick(60)
Invalid SurfaceIdentification. Expected LuaSurface, index or name.
stack traceback:
[C]: in function 'set_evolution_factor'
team_competition/challenges.lua:269: in function 'CH_start_challenge'
team_competition/challenges.lua:105: in function 'CH_nth_each_second'
team_competition/control.lua:965: in function <team_competition/control.lua:964>

After countdown for the Challenge started I left the team then aborted the game. Then this error happened. (Only me playing in single player mode.)

Error:

The mod Team Competition (2.1.3) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event team_competition::on_gui_click (ID 1)
team_competition/challenges.lua:219: bad argument #1 of 2 to 'pairs' (table expected, got nil)
stack traceback:
[C]: in function 'pairs'
team_competition/challenges.lua:219: in function 'CH_finish_challenge'
team_competition/challenges.lua:206: in function 'CH_abort_challenge'
team_competition/control.lua:3244: in function 'end_game_now'
team_competition/control.lua:1374: in function <team_competition/control.lua:1247>

added some lines trying to avoid the crash

Challenge now doesn't crash. Not sure how it's intended to only work with multiple teams, but alone you get 49 boxes and match 24 of them and are then left with 1. Then the challenge times out and you get a punishment.