block named "" used in a "blocks.json" file does not not exist in the registry

[gray bluff]

Hello, I'm new to all of this. as stated in the title, I'm getting this error message upon load up of the world. I used the blockbench block wizard, I can send screenshots of the json if needed

[vagrant imp]

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[gray bluff]

feel free to ping me!

[gray bluff]

heres the error