AttributeError: module 'skimage.measure' has no attribute 'compare_psnr'

This error occurs when you try to use the function `compare_psnr()` from the `skimage.measure` module in Scikit-Image, but it is not available or has been removed from the module.

It is possible that the function has been deprecated or replaced by another function in a newer version of Scikit-Image. You can check the Scikit-Image documentation to see if there is an alternative function or a different way to achieve the same result.

Alternatively, you can try reinstalling or updating Scikit-Image to see if the function becomes available again. You can do this using the following command in your terminal or command prompt:

pip install -U scikit-image

This will update Scikit-Image to the latest version available on PyPI (Python Package Index).