Cause
The image is not valid or too big.
Even if the image opens correctly in an image editor, it could be not supported by BananaPlus.
Solution
- Replace the image
- Resize the image to a smaller resolution
- Convert the image with another color space
- Edit the image with another image editor
- Set the environment variable QT_IMAGEIO_MAXALLOC to 1000 (1000MB).
For more information please visit the documentation of your operating system.