The mod Transportorio (0.0.9) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Transportorio::on_gui_text_changed (ID 2)
Unknown sprite "unknown/stone"
stack traceback:
[C]: in function 'add'
Transportorio/scripts/gui.lua:288: in function 'create_failed_search_message'
Transportorio/scripts/gui.lua:269: in function 'create_list_rows'
Transportorio/scripts/gui.lua:179: in function 'update_trades_list'
Transportorio/control.lua:469: in function <Transportorio/control.lua:465>