prestashop file too large should not exceed
1) index.php
die(phpinfo());
2) check this parametres
1- max_file_uploads = ? M
2- post_max_size = ? M
3- upload_max_filesize = ? M
3) change this parameters in your php.ini server
post_max_size = 50M
upload_max_filesize = 50M
max_file_uploads = 20M
4) Navigate to side menu > Advanced Parameters > Administration > Upload Quota.
Change the Maximum size for attachment (in megabytes) to a value that is equal to or larger than 20 MB.
5) .httaccess Website add this
php_value upload_max_filesize 10M
php_value post_max_size 20M
php_value memory_limit 32M
6) Reload your Server or refresh