If you receive any errors related to the upload limit, you should increase the values of upload_max_filesize and post_max_size.
Note that the value of upload_max_filesize should be at least as big as the value of post_max_size.
These changes can be done by following the steps given below:
Login to cPanel >> MultiPHP INI editor >> Choose the website from the drop-down list >> Enter the desired value in the field corresponding to upload_max_filesize and post_max_size >> Save
Please be aware that some scripts/CMS' have their own upload limit variable defined within their code. The above does not cover this aspect.
