I've got CRC errors in a lot of png files of my project; I did not know your error but it seems similar.
I often use Gimp and still don't know what options can cause this. I thought it was Gimp that was causing this problem, but I'm pretty sure I would do the same CRC error with images created in mspaint.
imagemagick may help you to fix this problem. Just run imagemagick, open the png image and save it.
The other problem when they are a lot of images in a project is to identify what images have errors.
That's why I'm doing a report in html generated by a Powershell script (which needs imagemagick).
I don't know if you share your project online (for example with GitHub or GitLab), but it would be helpful for me to test my script with the errors you are having.