@nzoko, Hi, welcome to the forum!
Please read How to get the best out of this forum if you haven't done yet.
I don't think I can help you, as I don't have a display with ssd1289. Therefore GxTFT doesn't support it.
In any case you would need to provide information about your selection, the constructors used.
And of course the error messages you got. In a code window (</> command symbol), please.
Please also provide links to your display and your processor board.
Jean-Marc