manifest_invalid_size

size or scene is not a valid size.

• Severity: Error: it blocks publishing the version.
• Where: manifest.json

How to fix it

It is { "width", "height" } in whole pixels, from 16 to 7680 wide and 16 to 4320 tall.

Wrong

{ "size": { "width": "800", "height": 600 } }

Right

{ "size": { "width": 800, "height": 600 }, "scene": { "width": 1920, "height": 1080 } }