No images are showing? The screen is white.

MIT App Inventor Help
1

I don't know what the problem is. Although the image is uploaded, the names are correct, and the properties are as well, when I run the application, the screen is white and no images appear. Please help

thanks ..I didn't notice the mistake in the name.

2

Avlid adding hypen in all images and try again instead of "a.jpg" try a.jpg

3

Thank you for cooperation. Have a great day.