After installing WordPress you can face some problem if you don’t have this configuration.
1. Add this line in wp-config.php
define('WP_MEMORY_LIMIT', '256M');
2. Find .htaccess file in public_html and paste the lines below.
php_value max_execution_time 300 php_value upload_max_filesize 64M php_value post_max_size 64M php_value max_input_time 300