If you don't complete json metadata the code will do nothing

[icla692]

it would be better to also be able to use plain text metadata in this case because mining will crash if you try to put plain text without even knowing that json is required

https://github.com/BoomDAO/world-template/blob/7590510522697e35bc2cd0d22cbf81c230d85082/src/world_template_backend/World/world.mo#L570