I got this bug when I tried to copy a loader filter onto another ghost loader. (The loader also had wire connected)
Notice
The mod Loader Utilities (1.1.6) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event loader-utils::on_entity_settings_pasted (ID 39)
loader-utils/control.lua:201: attempt to index field 'products' (a nil value)
stack traceback:
loader-utils/control.lua:201:
in function <
loader-utils
/control.lua: 189>