Server error (500 internal Server Error) in the ubuntu server

Way 1: Add the following lines in the wp-config. PHP file right above “That’s all, stop editing! Happy publishing”: define( ‘WP_MEMORY_LIMIT’, ‘515M’ ); define( ‘WP_MAX_MEMORY_LIMIT’, ‘512M’ ); And save wp-config.php file Note: before changing wp-config.php. you must download the file. Way 2: