The mod Project Cybersyn (1.3.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event cybersyn::on_robot_pre_mined (ID 15)
LuaTrain API call when LuaTrain was invalid.
stack traceback:
[C]: in function 'index'
__cybersyn/scripts/factorio-api.lua:743: in function 'send_alert_for_train'
cybersyn/scripts/factorio-api.lua:824: in function 'send_alert_depot_of_train_broken'
cybersyn/scripts/main.lua:45: in function 'on_depot_broken'
cybersyn/scripts/main.lua:582: in function 'on_stop_broken'
cybersyn/scripts/main.lua:663: in function <cybersyn/scripts/main.lua:658>

Same, when trying to delete a depot. Removed all trains and tried again. Same error. Broke the track right before the station. Same error. Tried to change the type of station. Same error.