Hello, thank you a lot for the answer! I am adding my github repo link so you can download the project and look at the error yourself. My github link: https://github.com/ivanpetrov95/chesshelper/tree/master.
Now for the error, I simulated such error by replacing my 640 px size to something bigger or lower, but again I am newbie in the tensorflow area so I might be wrong. My model is in the assets as well as the labelmap and everything needed. I checked my tflite file in netron and I saw that way my needed input must be 640x640x3(3 I think is the RGB, but again I am a newbie), but I could not “read” the output.
Thank you again for looking at my problem and answering me!