Drop item error HELPPP

[Duzztinn_]

I cant drop items on my minecraft server. when i try to do it, in the chat says ''procedure_drop.item'' i have no idea why this happens. I can drop items in creative but not in survival mode. i looked in essentialsX and server configs but i didn't find anything. Is this beause of a mod or something else? please help. (btw sorry if my english is not accurate)

[TileEntity]

After this message, add the latest.log from the server with sites like

https://mclo.gs/ and paste the link to it here