Plesk - Php.ini file
Process to increase the Upload max file in php.ini file.
Step 1 - Log in to your Plesk control panel.
Step 2 - Click on Tools & Settings.
Step 3 - Click on PHP settings.
Step 4 - Click on Php.ini.
Step 5 - Select the php version which you want to modify.
Step 6 - Search for upload max file and set the upload limite.
Step 7 - After modify the file click on OK.