While in Blueprint Sandbox, I clicked on a rail signal to put it in the cursor (not with pipette selection) and it caused an unrecoverable error.
The mod Clones (1.1.3) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event Clones::on_player_crafted_item (ID 16)
LuaItemStack API call when LuaItemStack was invalid for read.
stack traceback:
[C]: in function 'index'
__Clones/control.lua:4: in function <Clones/control.lua:3>