If some users encounter this problem, perform the following changes below:

In php.ini, there is the upload_max_filesize and post_max_size directives where both are policies that determine the maximum size of files that are uploaded to the server.

This setting also affects file uploading to the server (upload). To send large files, the value must be larger than upload_max_filesize.

In the php.ini directive memory_limit is responsible for controlling maximum memory used by PHP.

The default size is 8MB, but it is advisable to increase, to avoid problems in procedures that require a reasonable amount of memory.