It’s possible that the images causing the notification are SVG images, which require a different method to add alt tags. Instead of using the alt attribute, SVG images use the title or desc element to provide a description. You can add a title or desc element to the SVG image with a text description of the image.
Another possibility is that the notification is a false positive, meaning that it’s a mistake in the website scanner or auditing tool. Double-check the images that are flagged as missing alt tags and see if they are actually images or if they are some other type of content. Some days ago, I was also facing the same issue with my website. Now, its resolved by following the 2nd option that I have discussed.
