Pytorch giving blank outputs

I am relatively new to object detection and it’s my first time using pick pytorch

I trained the model, first with heterogeneous images (160)
Later with only homogeneous (14)

And the text file output is always blank.

Can someone please help me debug where I am wrong?
I’m not well versed with the code and no similar issue was found on Google.

I don’t know what part of code is necessary to post, if anyone can help me I’ll share the code with you. Thank you.