001+ Fatal error: Uncaught Error: Call to undefined function imagepng() in %s/test_image_equals_file_palette.php:10
002+ Stack trace:
003+ #0 {main}
001- The images differ in 25 pixels.
002- The images are equal.
003- ===DONE===
004+ thrown in %s/test_image_equals_file_palette.php on line 10