Problem with bmp_shield tft2.8

Hello everyone !

I have touchscreen TFT 2.8 Arduino MEGA 2560. When I want display a picture, this one display black screen. I managed to compile but the picture doesn't display.
Here is the exemple that I follow : Bitmaps | 2.8" TFT Touch Shield | Adafruit Learning System

I need your help please .. :slight_smile: