I have noticed that perhaps one in ten heads cannot be sold with /mh money sell

No errors in console. I haven't noticed any common theme. Heads appear to be the same as the rest:

Mob Hunting Version5.5.7

Can I provide any additional info?
Thank you.

Edit: It displays the mobhunting.bagofgoldsign.hold_reward_in_hand message, with these heads in hand.

Sorry, please disregard. This only happens on server restart, which I can deal with. :)

I should not have closed this, as it will be a major issue when this server gets more players.

Heads with value that are obtained before server restart, cannot be sold after.

Version 5.6.0. Spigot 1.12.2. Thank you!

What do you mean with "KILLED" heads? Is it heads dropped from killed mobs, where you both get a money reward and a head or is the reward head of Killed mob with a value and maybe a head drop as well?

Im not sure how to setup my test server to verify this issue?

Sorry I wasn't clear. Here's a config for you.

By "KILLED" I mean heads from "drop_money_on_ground_itemtype: KILLED"

Edit: As the pic in the top post shows, they still have the correct name, with the value in it, but I cannot sell them with /mh money sell

OK, I have no idea what changed, but I am now unable to reproduce the issue. Unsure if it was covered in a recent update, or if it was on my end.
I can now sell the skulls after the server has been restarted multiple times.
I will reopen if it magically starts again.
Thank you.