are not allowed to make proxied oEmbed requests.' ), array( 'status' => rest_authorization_required_code() ) );
		}
		return true;
	}

	/**
	 * Callback for the proxy API endpoint.
	 *
	 * Returns the JSON object for the proxied item.
	 *
	 * @since 4.8.0
	 *
	 * @see WP_oEmbed::get_html()
	 * @global WP_Embed   $wp_embed
	 * @global WP_Scripts $wp_scripts
	 *
	 * @param WP_REST_Request $request Full data about the request.
	 * @return object|WP_Error oEmbed response data or WP_Error on failure.
	 */
	public function get_proxy_item( $request ) {
		global $wp_embed, $wp_scripts;

		$args = $request->get_params();

		// Serve oEmbed data from cache if set.
		unset( $args['_wpnonce'] );
		$cache_key = 'oembed_' . md5( serialize( $args ) );
		$data      = get_transient( $cache_key );
		if ( ! empty( $data ) ) {
			return $data;
		}

		$url = $request['url'];
		unset( $args['url'] );

		// Copy maxwidth/maxheight to width/height since WP_oEmbed::fetch() uses these arg names.
		if ( isset( $args['maxwidth'] ) ) {
			$args['width'] = $args['maxwidth'];
		}
		if ( isset( $args['maxheight'] ) ) {
			$args['height'] = $args['maxheight'];
		}

		// Short-circuit process for URLs belonging to the current site.
		$data = get_oembed_response_data_for_url( $url, $args );

		if ( $data ) {
			return $data;
		}

		$data = _wp_oembed_get_object()->get_data( $url, $args );

		if ( false === $data ) {
			// Try using a classic embed, instead.
			/* @var WP_Embed $wp_embed */
			$html = $wp_embed->get_embed_handler_html( $args, $url );

			if ( $html ) {
				// Check if any scripts were enqueued by the shortcode, and include them in the response.
				$enqueued_scripts = array();

				foreach ( $wp_scripts->queue as $script ) {
					$enqueued_scripts[] = $wp_scripts->registered[ $script ]->src;
				}

				return (object) array(
					'provider_name' => __( 'Embed Handler' ),
					'html'          => $html,
					'scripts'       => $enqueued_scripts,
				);
			}

			return new WP_Error( 'oembed_invalid_url', get_status_header_desc( 404 ), array( 'status' => 404 ) );
		}

		/** This filter is documented in wp-includes/class-wp-oembed.php */
		$data->html = apply_filters( 'oembed_result', _wp_oembed_get_object()->data2html( (object) $data, $url ), $url, $args );

		/**
		 * Filters the oEmbed TTL value (time to live).
		 *
		 * Similar to the {@see 'oembed_ttl'} filter, but for the REST API
		 * oEmbed proxy endpoint.
		 *
		 * @since 4.8.0
		 *
		 * @param int    $time    Time to live (in seconds).
		 * @param string $url     The attempted embed URL.
		 * @param array  $args    An array of embed request arguments.
		 */
		$ttl = apply_filters( 'rest_oembed_ttl', DAY_IN_SECONDS, $url, $args );

		set_transient( $cache_key, $data, $ttl );

		return $data;
	}
}
<br />
<b>Fatal error</b>:  Uncaught Error: Failed opening required '/home/valigeria/public_html/wp-includes/blocks/comment-template.php' (include_path='.:/opt/alt/php81/usr/share/pear:/opt/alt/php81/usr/share/php:/usr/share/pear:/usr/share/php') in /home/valigeria/public_html/wp-includes/blocks/require-dynamic-blocks.php:15
Stack trace:
#0 /home/valigeria/public_html/wp-includes/blocks/index.php(13): require()
#1 /home/valigeria/public_html/wp-settings.php(360): require('/home/valigeria...')
#2 /home/valigeria/public_html/wp-config.php(111): require_once('/home/valigeria...')
#3 /home/valigeria/public_html/wp-load.php(50): require_once('/home/valigeria...')
#4 /home/valigeria/public_html/wp-blog-header.php(13): require_once('/home/valigeria...')
#5 /home/valigeria/public_html/index.php(17): require('/home/valigeria...')
#6 {main}
  thrown in <b>/home/valigeria/public_html/wp-includes/blocks/require-dynamic-blocks.php</b> on line <b>15</b><br />
<br />
<b>Fatal error</b>:  Uncaught Error: Call to a member function set() on null in /home/valigeria/public_html/wp-includes/l10n.php:854
Stack trace:
#0 /home/valigeria/public_html/wp-includes/l10n.php(957): load_textdomain('default', '/home/valigeria...', 'it_IT')
#1 /home/valigeria/public_html/wp-includes/class-wp-fatal-error-handler.php(49): load_default_textdomain()
#2 [internal function]: WP_Fatal_Error_Handler-&gt;handle()
#3 {main}
  thrown in <b>/home/valigeria/public_html/wp-includes/l10n.php</b> on line <b>854</b><br />