C4-Week3: Image Segmentation with U-Net

I’m getting this error message every time I submit my assignment…

** ### Platform Error: We’re experiencing some technical difficulties*
Please try submitting again in 10 minutes. If the error isn’t resolved in 24 hours, please reach out to Coursera through our Help Center.

I’ve checked If there is error in my code but no, I can’t find any and I don’t think there is
Any suggestions or help would be highly appreciated.

As the message says, it seems the Coursera platform is having technical issues.

Well actually, these are the errors I am getting…

Grader Error: Grader feedback not found

Platform Error: We’re experiencing some technical difficulties

I have no idea how to resolve the problem

It says there: “Platform error”.
It’s Coursera’s issue - you can’t do anything to fix it. You just have to wait and try again later.