Site Front End is down, Back End accessible

Hi, the front end of our website, aviusa.org, is down. It shows up normally when logged in. I can’t tell what’s going on.

The only difference is that earlier in the week I installed a php snippet for customizing the copyright which I have now removed to test, but the site is not coming up. the Snippet was installed in the child theme, theme file editor, php.

Thanks for any feedback.

//customize Footer Bar

add_filter( ‘generate_copyright’,’tu_custom_copyright’ );

function tu_custom_copyright() {

    ?>

    ©2024 Auroville International USA

}

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