Bedrock realms content error

Since the new update made custom items and blocks no longer experimental, I decided to update my personal addon for my realm.

Upon updating it, everything has failed...

• Custom Blocks use the Update Game Blocks texture and display errors like [Blocks][error]-block of name 'blocks:bronze_block' does not exist. did you just add an updater with a bad block name?
• Custom items are invisible and constantly say [Item][error]-Item item.crops:pineapple doesn't have an icon atlas so it must have a single icon texture.
• Custom mobs are invisible, even the ones that once worked fine on the realm

Please fix this ASAP as it has practically made my realm redundant and cost me a month's access for something that I have worked ages on that doesn't even work anymore on it