Managed backup times out

Managed backup is not running. It is returning the following message:

REQUEST TIMEOUT

Managed backup is not running. It is returning the following message:

REQUEST TIMEOUT

With 500 error showing up n the JS console.

Following lines are added in the wp-config.php file

define(‘SNAPSHOT_FILESET_CHUNK_SIZE’, 10);

define(‘SNAPSHOT_TABLESET_CHUNK_SIZE’, 100);

Max execution time is 500 seconds and the PHP memory os increased to 256MB