My chests become unbreakable after adding my mod.

Hello everyone, I have made this mod of a new ore that's found in the End, just like how Diamond gear is upgrading with a template and netherite, Netherite tools can be upgraded with a new template and a new ingot. Anyway, for some reason, chests are now unbreakable, I break them, they disappear, placing or breaking any block near them, they respawn. The only thing that affects Chests is a Loot Table to make the template spawn in End chests, and I tried deleting it but it didn't fix it. All of my other mod elements are gear (armour and tools), nugget, ore, ingot, block, template and the recipes, that's it. I don't know what could be causing it.