Could not pass event InventoryOpenEvent to StructureBoxes v2.13

[TomLewis]

Describe the bug
Using Paper 1.12.2 just having the plugin on the server spams the console every secomd.
https://gist.github.com/TomLewis/0f1ec54d7ca92fbf3f749a3326b6f21d

To Reproduce
Use Paper 1.12.2 use StructureBoxes 2.13

Environment (please complete the following information):

• Server software Paper 1.12.2

[MadCabbagee]

this is also an error for me on 1.16.3 Tuinity (fork of paper)
latest.log

[Malfrador]

Also happens for me with Paper 1.16.3. Similar issues with the InventoryClickEvent. Very annoying because it spams the log so much.