After editing my wordpress website's footer copyright credites using My Custom Functions plugin, my site is down

Question

I am making a wordpress store using storefront theme named Pakoutfit.com.

I tried to edit its footer credentials using My Custom Functions plugin and using this plugin I run following code,

add-action( 'init' , 'custom_remove_footer_credit' , 10 );

function custom_remove_footer_credit(){
    remove_action( 'storefront_footer' , 'storefront_credit' , 20 );
    add_action( 'storefront_footer' , 'custom_storefront_credit' , 20 );
}

function custom_storefront_credit(){
    ?>
    <div class="site-info">
    &copy; PakOutfit <?php echo get_the_date( 'Y' ); ?>
    </div>
    <?php
}

I do that following this youtube tutorial,

Now when I tried to open my site or even its wp-admin panel it says,

This page isn’t working pakoutfit.com is currently unable to handle this request. HTTP ERROR 500

I dont know that in which file My custom Functions plugin make changes so that I can reverse them.

I am using godaddy domain name and hosting.

I am new in this field. Please help me to make my site live again. Thanks

Answer 1

Modification to your site should be made via a WordPress child theme. Do not edit core theme files: https://codex.wordpress.org/Child_Themes

Using your FTP or cPanel login, locate the file where you made the changes and remove them. That will restore your site.

Once you have your child theme installed and activated, and your function to the child theme functions.php file.

Be sure to change this:

add-action

To this:

add_action