The mod Warptorio2 (1.3.4) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event warptorio2::on_player_changed_position (ID 83)
The mod Warptorio2 (1.3.4) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event warptorio2::on_entity_cloned (ID 120)
warptorio2/control_main.lua:829: attempt to get length of local 'inv' (a nil value)
stack traceback:
warptorio2/control_main.lua:829: in function 'y'
warptorio2/lib/lib_control.lua:289: in function <warptorio2/lib/lib_control.lua:289>
[C]: in function 'clone'
warptorio2/control_main.lua:387: in function 'TeleportLogic'
warptorio2/control_main.lua:428: in function 'tx'
warptorio2/lib/lib_control_cache.lua:161: in function 'call_player'
warptorio2/lib/lib_control_cache.lua:538: in function 'y'
warptorio2/lib/lib_control.lua:289: in function <warptorio2/lib/lib_control.lua:289>
stack traceback:
[C]: in function 'clone'
warptorio2/control_main.lua:387: in function 'TeleportLogic'
warptorio2/control_main.lua:428: in function 'tx'
warptorio2/lib/lib_control_cache.lua:161: in function 'call_player'
warptorio2/lib/lib_control_cache.lua:538: in function 'y'
warptorio2/lib/lib_control.lua:289: in function <warptorio2/lib/lib_control.lua:289>

This one happened on warp, just folding it in here to avoid spamming:

The mod Warptorio2 (1.3.4) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event warptorio2::on_tick (ID 0)
The mod Warptorio2 (1.3.4) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event warptorio2::on_entity_cloned (ID 120)
warptorio2/control_main.lua:829: attempt to get length of local 'inv' (a nil value)
stack traceback:
warptorio2/control_main.lua:829: in function 'y'
warptorio2/lib/lib_control.lua:289: in function <warptorio2/lib/lib_control.lua:289>
[C]: in function 'clone_entities'
warptorio2/control_main.lua:986: in function 'Warp'
warptorio2/control_main.lua:859: in function 'Warpout'
warptorio2/control_main_helpers.lua:227: in function 'b'
warptorio2/lib/lib_control.lua:281: in function <warptorio2/lib/lib_control.lua:281>
stack traceback:
[C]: in function 'clone_entities'
warptorio2/control_main.lua:986: in function 'Warp'
warptorio2/control_main.lua:859: in function 'Warpout'
warptorio2/control_main_helpers.lua:227: in function 'b'
warptorio2/lib/lib_control.lua:281: in function <warptorio2/lib/lib_control.lua:281>

The issue is a player left the game while in the waiting to respawn screen
His controller type is defines.controllers.ghost and in this state he does not have an inventory
Code needs to check if get_main_inventory() returns nil and act accordingly

If we know the player, we could try removing their data from the game using https://lua-api.factorio.com/latest/LuaGameScript.html#LuaGameScript.purge_player

This is for the second issue, not the first, to be clear.

Further update: Issue occurs if player is dead when a vehicle goes through an elevator as well.

rip.

Add me on steam for future if stuff like this comes up.

The issue is a player left the game while in the waiting to respawn screen
His controller type is defines.controllers.ghost and in this state he does not have an inventory
Code needs to check if get_main_inventory() returns nil and act accordingly

Thank you for solution.