You may need to elaborate more. Hence, please answer the following questions, so that we can help you further:

1- What tool did you use?

2- What is your task?

3- What are the results you had?

4- How much accuracy your model achieved?

5- Besides the accuracy, what other metrics you used?

6- Did you have training/test sets?

Finally, please clarify your statement "CNN model that mismatch between the provided input data and the model's expectations?"

HTH.

Dr. Samer Sarsam

Try training the samples with a more simplified code and run step by step, if it worked, then try to finalize it.

Could you elaborate more, please.

@Noor