Adding ACF Blocks causes error and blocks return null

[julienkos]

Hi there, if you create a custom acf block (gutenberg), no data comes back. I received the following message:

{ "errors": [ { "debugMessage": "get_object_vars(): Argument #1 ($object) must be of type object, array given", "message": "Internal server error", "extensions": { "category": "internal" }, "locations": [ { "line": 5, "column": 7 } ], "path": [ "pages", "nodes", 0, "blocks" ] } ], "data": { "pages": { "nodes": [ { "title": "Home", "blocks": null } ] } }, "extensions": { "debug": [] } }

Any advice on how to fix this issue?

As for steps to reproduce:

1. Added function to functions.php to register block.
2. Added fields to block through ACF.
3. Added block to home page.
4. Tried to make graphql call.
5. Error is shown.

I am using the latest version of ACF Pro.

[drewbaker]

That’s weird. We use custom blocks a lot.

Whats your GQL look like?

[drewbaker]

Can you also post your PHP for the block registration?

[julienkos]

Hi Drew, thank you for the quick reply!

Here is the PHP

acf_register_block_type(array( 'name' => 'hero', 'title' => __('Hero'), 'description' => __('A custom hero block.'), 'render_template' => get_template_directory() . '/template-parts/blocks/hero/hero.php', ));

Turns out this alone doesn't cause the issue. It only starts when I add a field to the block.

I set "Show in GraphQL" to yes and everything else is default. I can make a video to show if you like.

[drewbaker]

This is what I have on a site that is working great:

<?php 
/*
 * Register custom ACF blocks
 * SEE https://www.advancedcustomfields.com/resources/blocks/
 * SEE https://www.advancedcustomfields.com/resources/acf_register_block_type/
 */
 
function fuxt_custom_blocks() {

    // Abort early if custom blocks not supported (not ACF Pro).
    if( !function_exists('acf_register_block_type') ) {
		return;
    }
    
    // Credit block.
    acf_register_block_type(array(
        'name'              => 'credit',
        'title'             => 'Credit',
        'description'       => 'A custom credit block.',
        'category'          => 'text',
        'keywords' 			=> array('text', 'credit'),
        'icon'				=> 'editor-textcolor',
        'render_template'   => get_template_directory() . '/blocks/credit/block.php',
        'enqueue_style' 	=> get_template_directory_uri() . '/blocks/credit/block.css',
    ));
    
    // Scrolling Gallery
    acf_register_block_type(array(
        'name'              => 'scrolling-gallery',
        'title'             => 'Scrolling Gallery',
        'description'       => 'A side scrolling gallery block.',
        'category'          => 'media',
        'keywords' 			=> array('gallery', 'scrolling', 'image'),
        'icon'				=> 'images-alt',
        'render_template'   => get_template_directory() . '/blocks/scrolling-gallery/block.php',
        'enqueue_style' 	=> get_template_directory_uri() . '/blocks/scrolling-gallery/block.css',
    ));
    
    // Stats Block
    acf_register_block_type(array(
        'name'              => 'stats',
        'title'             => 'Stats',
        'description'       => 'A block used to show statistics.',
        'category'          => 'text',
        'keywords' 			=> array('statistics', 'numbers', 'count'),
        'icon'				=> 'info',
        'render_template'   => get_template_directory() . '/blocks/stats/block.php',
        'enqueue_style' 	=> get_template_directory_uri() . '/blocks/stats/block.css',
    ));  
    
    // Video Tray
    acf_register_block_type(array(
        'name'              => 'video-tray',
        'title'             => 'Video Tray',
        'description'       => 'A block to show multiple small Vimeo videos in a scrolling tray.',
        'category'          => 'media',
        'keywords' 			=> array('video', 'vimeo', 'scrolling'),
        'icon'				=> 'video-alt2',
        'render_template'   => get_template_directory() . '/blocks/video-tray/block.php',
        'enqueue_style' 	=> get_template_directory_uri() . '/blocks/video-tray/block.css',
    ));
    
    // Press Links
    acf_register_block_type(array(
        'name'              => 'links',
        'title'             => 'Links',
        'description'       => 'A block to show multiple links to press articles.',
        'category'          => 'widgets',
        'keywords' 			=> array('press', 'links', 'article'),
        'icon'				=> 'admin-links',
        'render_template'   => get_template_directory() . '/blocks/links/block.php',
        'enqueue_style' 	=> get_template_directory_uri() . '/blocks/links/block.css',
    ));
    
    // Awards
    acf_register_block_type(array(
        'name'              => 'awards',
        'title'             => 'Awards',
        'description'       => 'A block to show Awards.',
        'category'          => 'widgets',
        'keywords' 			=> array('awards', 'links'),
        'icon'				=> 'awards',
        'render_template'   => get_template_directory() . '/blocks/awards/block.php',
        'enqueue_style' 	=> get_template_directory_uri() . '/blocks/awards/block.css',
    ));
    
    // Video with badge 
    acf_register_block_type(array(
        'name'              => 'video-with-badge',
        'title'             => 'Video with Badge',
        'description'       => 'A block to to embed a video, with a badge in the top corner.',
        'category'          => 'media',
        'keywords' 			=> array('video', 'badge', 'vimeo'),
        'icon'				=> 'video-alt3',
        'render_template'   => get_template_directory() . '/blocks/video-with-badge/block.php',
        'enqueue_style' 	=> get_template_directory_uri() . '/blocks/video-with-badge/block.css',
    ));    

}
add_action('acf/init', 'fuxt_custom_blocks');

[julienkos]

Hi Drew, thank you for the continued support. I tried using some of your code and it works until I add a field to it. I've made a short video showing you what happens.

https://www.loom.com/share/493b4b56cd734e13996ee4c707a28237

I also thought it might be beneficial for me to add a list of my plugins in case you think any of these might be causing issues. I'm not sure which ones you are using along side yours.

• Add WPGraphQL SEO - Version 4.16.2
• Advanced Custom Fields PRO - Version 5.12
• Contact Form 7 - Version 5.5.6
• Headless Block Parser - Version 0.1.0
• WP GQL Gutenberg - Version 0.3.11
• WP GraphQL - Version 1.7.2
• WPGraphQL for Advanced Custom Fields - Version 0.5.3
• WPGraphQL JWT Authentication - Version 0.4.0
• WPGraphQL WPML - Version 1.1.0
• WPML Multilingual CMS - Version 4.5.5
• WPML SEO - Version 2.0.1
• Yoast SEO - Version 18.4.1

I've tried deactivating everything except for the 4 required (your plugin, graphql, acf graphql, and acf pro) but it still causes the same error. Let me know what you think. I will try creating a fresh install and seeing if it happens to me there as well.

[b00y0h]

any update on this? I'm having the exact same issue.

[rsm0128]

I can't replicate the same issue on my side.
@julienkos @b00y0h Do you still have the issue with the latest version?