PHP Fatal error: Allowed memory size exhausted

`Hi,
Something bad is happening with my site when I’m trying to update rules inside your plugin. The site is crashing because of a critical issue. Always getting Allowed memory size exhausted even when allowed memory was 8GB

I turn off all my other plugins left only yours, woocommerce and elementor and problem still appear.

The error is showing problem in public_html/wp-includes/wp-db.php on line 2022 and it is:
while ( $row = mysqli_fetch_object( $this->result ) ) {
$this->last_result[ $num_rows ] = $row;
$num_rows++;
}

The page I need help with: [log in to see the link]