Barrels issue when right-clicking an item from the OUTPUT area

[Cyber-MC]

Description (Required)

What essentially happens is when you right-click on the output section of the barrel itself, it will reset the barrel and throw an error in the console. Along with this, if you break the barrel, it will not drop any items other than itself and the display item, which can leave players at a risk of losing valuable items for good. Other than that, this is only tested with the DSU rather than the other barrels, with it being the largest barrel there is with the addon.

Steps to reproduce the Issue (Required)

https://www.youtube.com/watch?v=oX7GLvhwkd8&feature=youtu.be

Expected behavior (Required)

The expected behavior for this issue is that the barrel should calculate how many items are actually being taken from the barrel when right-clicking and should drop the items that were previously in there and immediately despawn the display item on breakage of the barrel.

Server Log / Error Report

This is the only error report that was given from within the console. You can view that here: https://pastebin.com/b1KFfFJZ

Environment (Required)