The mod LTN/Cybersyn - TCS Refuel Compatibility Mod (0.3.2) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event LTN-TCS-Refuel::on_train_changed_state (ID 25)
Error when running interface function cybersyn.add_available_train: cybersyn/scripts/remote-interface.lua:309: assertion failed!
stack traceback:
[C]: in function 'assert'
cybersyn/scripts/remote-interface.lua:309: in function <cybersyn/scripts/remote-interface.lua:304>
stack traceback:
[C]: in function 'call'
LTN-TCS-Refuel/control.lua:97: in function <LTN-TCS-Refuel/control.lua:76>

thanks for the bug report, may I know which version of Cybersyn you are running?

Can you describe what could have led to the crash? Is this related to the space elevator in SE?