PHP Errors/Notices

Hi there,

if anyone can share a suggestion to fix my php errors, because I’m not so skilled to to it, if it is not too complicated I’m asking for support!
In fact, `in my functions.php file I am advised about 2 php errors which are repeated in my category pages, in detail:

ERROR 1:

The query monitor message is:

“ Trying to access array offset on value of type bool “

the Locations where the error is found is in functions.php… I copy/past location message:

wp-content/themes/astra-child/functions.php:199
. get_product_category_by_id()?wp-content/themes/astra-child/woocommerce/archive-product.php:171
. wc_get_template()?wp-content/plugins/woocommerce/templates/taxonomy-product-cat.php:22
. ?

if I go to the line 199 in my functions.php I find the code :

return $term[‘slug’];

which I imagine contains that error

… I write the same code in its context:

function get_product_category_by_id( $category_id ) {
$term = get_term_by( ‘id’, $category_id, ‘product_cat’, ‘ARRAY_A’ );
return $term[‘slug’];
}

any idea of what’s wrong in:

return $term[‘slug’];

?

ERROR 2

The query monitor message is:

“Undefined variable: product_id”

the location is again functions.php on line 84:

I copy the location message:

wp-content/themes/astra-child/functions.php:84
wc_template_loop_product_replaced_thumb()
wp-includes/class-wp-hook.php:303
do_action(‘woocommerce_before_shop_loop_item_title’)
wp-content/themes/astra-child/woocommerce/archivedlava-product.php:42
load_template(‘wp-content/themes/astra-child/woocommerce/archivedlava-product.php’)
wp-content/plugins/woocommerce/includes/wc-core-functions.php:284
wc_get_template_part()
wp-content/themes/astra-child/woocommerce/archive-product.php:176
wc_get_template()
wp-content/plugins/woocommerce/templates/taxonomy-product-cat.php:22

if I go to functions.php on line 84 I find:

$img2 = get_field(‘dlava_orizzontal_frame’, $product_id);`

I guess I should add something in $product_id… isn’t it?

If anyone can help I’m really grateful.

Many thanks,
Lorenza