The mod Overloaded Trains (2.0.8) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event OverloadedTrains::on_train_changed_state (ID 29)
OverloadedTrains/control.lua:365: attempt to perform arithmetic on global 'weight' (a nil value)
stack traceback:
OverloadedTrains/control.lua:365: in function <OverloadedTrains/control.lua:277>

This also deleted all my cargo wagons..

Does this only happen wenn riding a fluid wagon?
Wagons getting deleted shouldn't happen unless you uninstall the mod with loaded wagons

I uninstalled the mod the after crash as it has happened multiple times. I was riding a cargo train.

Should be fixed now

Now

• Fixed an error when a player is riding a fluid wagon

I was not riding a fluid wagon

Is it fixed though?