ValueError Image is not numeric but NoneType

This error occurs when you try to perform an operation on an image that is not in a valid format. It is possible that the image file could not be read correctly or the image data is missing or corrupted. Ensure that the image file is in a supported format such as JPEG, PNG, or BMP and that it is not empty or damaged. Additionally, check the code to ensure that the image is properly loaded and that the variable holding the image reference is not set to None.