Is your feature request related to a problem? Please describe.
Add the functionality that the backpack is not immune to the /clean command, or that there can be an administrative command, so that the contents of the backpack can be deleted.

Describe the solution you'd like
Try binding the /clean command or making the backpack not invisible in the inventory, so the command can take effect

https://github.com/Tiviacz1337/Travelers-Backpack/wiki/Commands