I logged off for a minute on my phone and when i log back into my world my shulker box of full enchanted diamond armor disapeared and ive checked everywhere nothing

So i was on Minecraft enchanting armor when i decided to download a minecraft sound pack for my game i downloaded it next thing i know my shulker box disapears when i log back in i remove and delete the sound pack still nothing i dont know if this was an in-game bug or the pack but PLEASE help me!!