ISBAT PHP Fatal error: Uncaught Error: Cannot use object of type WP_Error

[thefrosty]

Describe the bug:

Fatal error being thrown:

PHP Fatal error:  Uncaught Error: Cannot use object of type WP_Error as array in /srv/users/.../plugins/coblocks/src/blocks/gist/index.php:50
Stack trace:
#0 /srv/users/.../wp-includes/class-wp-embed.php(156): coblocks_block_gist_handler(Array, Array, 'https://gist.gi...', Array)
#1 /srv/users/.../wp-includes/class-wp-embed.php(219): WP_Embed->get_embed_handler_html(Array, 'https://gist.gi...')
#2 /srv/users/.../wp-includes/class-wp-embed.php(463): WP_Embed->shortcode(Array, 'https://gist.gi...')
#3 [internal function]: WP_Embed->autoembed_callback(Array)
#4 /srv/users/.../wp-includes/class-wp-embed.php(445): preg_replace_callback('|^(\\s*)(https?:...', Array, '<!-- wp:paragra...')
#5 /srv/users/...wp-includes/class-wp-hook.php(307): WP_Embed->autoembed('<!-- wp:paragra...')
#6 /srv/users/.../wp-includes/plugin.php( in /srv/users/.../wp-content/plugins/coblocks/src/blocks/gist/index.php on line 50

To reproduce:

Log into WP Admin, note all dashboard widgets missing.

Expected behavior:

No error, or blocker in admin index dashboard page.

Screenshots:

Isolating the problem:

• This bug happens with no other plugins activated
• This bug happens with a default WordPress theme active
• This bug happens without the Gutenberg plugin active
• I can reproduce this bug consistently using the steps above

WordPress version:

5.9.3

PHP version:

7.4.29

Gutenberg version:

[thefrosty]

No validations exists for when an API response is bad:

coblocks/src/blocks/gist/index.php

Lines 39 to 51 in ab72320

	$api_resp = wp_remote_get(
	'https://api.github.com/gists/' . $gist_id,
	array(
	'headers' => array(
	'Accept' => 'application/json',
	),
	)
	);
	// JSON decode the response body.
	// Then grab files from JSON object.
	$body = json_decode( $api_resp['body'], true );
	$files = empty( $body['files'] ) ? array() : $body['files'];