Health Check – PHP Notice: Array to string conversion

[24-May-2020 05:31:04 UTC] PHP Notice: Array to string conversion in /home/user/public_html/wordpress/wp-content/plugins/health-check/includes/class-health-check-site-status.php on line 2014

foreach ( $tests as $test ) {
	$function = sprintf(
	'get_test_%s',
	$test['test']
	);

	if ( method_exists( $this, $function ) && is_callable( array( $this, $function ) ) ) {
	$results[] = call_user_func( array( $this, $function ) );
	} else {
	$results[] = call_user_func( $test['test'] );
	}
	}