Issue page return blank page

Upon further investigation I found that the page isn’t showing because of memory limit out..

While executing the following statements in vip-scanner/vip-scanner.php, its memory limit exceeds and thus stop processing further

if ( $scanner !== get_transient( $transient_key ) )
@set_transient( $transient_key, $scanner );

I have also done the following but no luck..

Looks like it is breaking within the function run_theme_review

$scanner = VIP_Scanner::get_instance()->run_theme_review( $theme, $review, array( 'checks' ) );