GX2003: unknown attribute or slot

Cause#

A component call passes an attribute that is not a prop of the component. An attribute name is the prop name with a lower-case first letter.

Example#

package card

props {
  Title string
}

<article>{p.Title}</article>

package card

<Card title="News" tilte="Old" />

gx check reports:

ui/card/Page.gx:3:20: GX2003: unknown attribute "tilte" on <Card>

Fix#

1. Correct the attribute name.
2. Or add the prop to the props block of the component.