Tried following the linked function in this thread but continue to get popup error message:

“WC External Variations: An error has occured, see console”

Is there a console where there is a more specific error message? If so where specifically?

Important to note, the external links works with some products, even products with 200+ variations. But not all products. See code implemented in functions.php below:

function custom_wc_ajax_variation_threshold( $qty, $product ) {
	return 650;
}

add_filter( 'woocommerce_ajax_variation_threshold', 'custom_wc_ajax_variation_threshold', 10, 2 );