I don't see any posts for the same problem. I got this error when I tried to place a light pole on a blueprint ghost of an advanced assembler.

The mod There is my ghost (0.18.3) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event there-is-my-ghost::on_built_entity (ID 6)
Unknown recipe name:
stack traceback:
there-is-my-ghost/functions.lua:263: in function 'restore_stored_entity'
there-is-my-ghost/functions.lua:254: in function 'restore_stored_entities'
there-is-my-ghost/events.lua:70: in function <there-is-my-ghost/events.lua:37>
stack traceback:
[C]: in function 'create_entity'
there-is-my-ghost/functions.lua:263: in function 'restore_stored_entity'
there-is-my-ghost/functions.lua:254: in function 'restore_stored_entities'
there-is-my-ghost/events.lua:70: in function <there-is-my-ghost/events.lua:37>

is that a modded assembler? if so please add either the save, or the modlist used

My apologies, I didn't keep up with this. Thanks for replying! I don't have the save anymore so it's a non-issue now. Also I'm sure I had other mods installed, so it might have been problem with one them. Sorry to bother you. :)

Just installed this mod and immediately ran into the same problem when placing an inserter over a furnace. The inserter has a changed recipe and the furnace is also modded. Both entities come from the Krastorio 2 mod.

The mod There is my ghost (0.18.3) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event there-is-my-ghost::on_built_entity (ID 6)
Unknown recipe name:
stack traceback:
there-is-my-ghost/functions.lua:263: in function 'restore_stored_entity'
there-is-my-ghost/functions.lua:254: in function 'restore_stored_entities'
there-is-my-ghost/events.lua:70: in function <there-is-my-ghost/events.lua:37>
stack traceback:
[C]: in function 'create_entity'
there-is-my-ghost/functions.lua:263: in function 'restore_stored_entity'
there-is-my-ghost/functions.lua:254: in function 'restore_stored_entities'
there-is-my-ghost/events.lua:70: in function <there-is-my-ghost/events.lua:37>