How can PHP configurations affect error messages related to file uploads?

PHP configurations such as `upload_max_filesize` and `post_max_size` can affect error messages related to file uploads by limiting the size of files that can be uploaded. To solve this issue, you can adjust these configurations in your php.ini file to allow larger file uploads.

// Adjust PHP configurations for file uploads
ini_set('upload_max_filesize', '20M');
ini_set('post_max_size', '25M');