Cannot upload file to the website
If you’re trying to upload a file with the size of over 32 Mb, follow the instructions: Cannot upload file with the size of over 32 Mb
If your file is less than that, you must have used all available disk space on the hosting. The information about the disk space is displayed on your left, in the cPanel Statistics section. After you have checked out the statistics, you can either remove unnecessary files or upgrade your pricing plan to a better one, which has more disk space.
How to upgrade your hosting plan