Undefined index: type in /wp-includes/rest-api.php

[Mte90]

I am getting this errors in the PHP log but is not clear why they are here or why WordPress fails.
I am getting them on the home page but I think that wordpress should avoid the undefined index issue, maybe also the notice for rest_validate_value_from_schema should inform about the rest that generated.

[19-May-2022 09:53:49 UTC] PHP Notice:  Undefined index: type in /wp-includes/rest-api.php on line 2095
[19-May-2022 09:53:49 UTC] PHP Notice:  Undefined index: type in /wp-includes/rest-api.php on line 2110
[19-May-2022 09:53:49 UTC] PHP Notice:  rest_validate_value_from_schema è stato richiamato <strong>in maniera scorretta</strong>. La parola chiave dello schema "tipo" per stockStatus può contenere solamente i tipi predefiniti: array, object, string, number, integer, boolean, e null. Leggi <a href="https://wordpress.org/support/article/debugging-in-wordpress/">Debugging in WordPress</a> per maggiori informazioni. (Questo messaggio è stato aggiunto nella versione 5.5.0.) in /wp-includes/functions.php on line 5775
[19-May-2022 09:53:49 UTC] PHP Notice:  Undefined index: type in /wp-includes/rest-api.php on line 2119

[costdev]

Hi @Mte90, I've just started looking into this.

Can you confirm whether you have another _doing_it_wrong() like this one about the index being required?

La parola chiave dello schema "tipo" per stockStatus è obbligatoria.

This fires if ! isset( $args['type'] ), so I believe it should also be there in your logs.

[Mte90]

I don't have in my website a REST with that value, my guess is that is generated by Woocommerce (it is used).

Looking at the code ​https://github.com/WordPress/wordpress-develop/blob/trunk/src/wp-includes/rest-api.php#L2098:

<?php
if ( ! isset( $args['type'] ) ) {
                /* translators: %s: Parameter. */
                _doing_it_wrong( __FUNCTION__, sprintf( __( 'The "type" schema keyword for %s is required.' ), $param ), '5.5.0' );
        }

        if ( is_array( $args['type'] ) ) {

We check if isset later if it is an array but not together so there is the error.

[Mte90]

I think that we can close it as after all those time I didn't saw that issue anymore.

Also the code changed a bit and now expected an array for that variable ​https://github.com/WordPress/wordpress-develop/blob/trunk/src/wp-includes/rest-api.php#L2123