I try it with one mod enabled, and it still occurs.

The mod Team Competition (2.1.5) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event team_competition::on_gui_click (ID 1)
The mod Team Competition (2.1.5) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event team_competition::on_research_finished (ID 22)
team_competition/control.lua:2595: attempt to index field '?' (a nil value)
stack traceback:
team_competition/control.lua:2595: in function <team_competition/control.lua:2582>
stack traceback:
[C]: in function 'newindex'
__team_competition/control.lua:2532: in function 'setup_init_game'
team_competition/surfaces.lua:120: in function 'CreateGameSurface'
team_competition/control.lua:3164: in function 'player_play_now'
team_competition/control.lua:1346: in function <team_competition/control.lua:1247>