"Barlow" Google Font Missing

Odd have you tried just adding that font as opposed to all?

https://docs.generatepress.com/article/customizing-the-google-font-list/#adding-your-google-font-to-the-list

I can get the Barlow font to load with this code:

add_filter( 'generate_typography_customize_list', 'tu_add_google_fonts' );
function tu_add_google_fonts( $fonts ) {
	$fonts[ 'barlow' ] = array(
		'name' => 'Barlow',
		'variants' => array( '400', '500', '600', '700', '800' ),
		'category' => 'sans'
	);

	return $fonts;
}

But not when using this code:

add_filter( 'generate_number_of_fonts','tu_show_all_available_google_fonts' );
function tu_show_all_available_google_fonts() {
	return 'all';
}

The ALL list is something that needs regularly updating which we haven't done in a little while. We may find a better solution but in the meantime we recommending loading the individual fonts as you have done.

I understand. Thanks for helping! Great service as always.

You're welcome