My text in Scene Builder is not visible on the screen.

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There are a few reasons why your text may not be visible on the screen in Scene Builder:

1. Check the font color: If the font color is set to white or a light color, it may blend in with the background. Try changing the font color to a darker color.

2. Check the font size: If the font size is too small, it may be difficult to see. Try increasing the font size.

3. Check the placement: Make sure the text is not positioned outside of the visible area of the screen or behind another element.

4. Check the opacity: If the opacity of the text is set to 0, it will not be visible. Make sure the opacity is set to 1 or a higher value.

5. Check the visibility: If the text's visibility property is set to false, it will not be visible on the screen. Make sure the visibility property is set to true.