There can be many reasons why one can’t upload images WordPress. One of the most common reasons is that the file size of the image being uploaded is larger than the allowed limit for uploads. WordPress has a default limit of 2MB for uploading images. Additionally, the server hosting the website may have a file size limit for uploads. This limit is usually determined by the hosting provider and can be much lower than the WordPress default. Another possible reason for not being able to upload images is that the server does not have sufficient permissions to upload files. This is usually determined by the web hosting provider and can be adjusted if needed.