Cannot connect Block to ACF field group

[Sandrio84]

Hi, I have an issue when creating a new custom field group. I'm using ACF PRO 5.9.5 and WordPress 5.7.
When adding the install to my theme I cannot add the Block in ACF (Show this field group if 'Block' is equal to ... )
I used the install (composer require "palmiak/timber-acf-wp-blocks") when I'm in the 'dist' folder.
Am I doing something wrong?

My theme structure:
dist:

• composer.json
• vendor
  • composer
  • palmiak
• wp-content
  • plugins
    • timber
  • themes
    • cec-theme
      • views
        • blocks
          • testimonial.twig

-- Testimonial.twig code --
{#
Title: Testimonial
Description: Customer testimonial
Category: formatting
Icon: admin-comments
Keywords: testimonial quote "customer testimonial"
Mode: edit
Align: left
PostTypes: page post
SupportsAlign: left right
SupportsMode: false
SupportsMultiple: false
#}

{{ fields.testimonial }}

{{ fields.author }}

<style type="text/css"> [data-{{ block.id }}] { background: {{ fields.background_color }}; color: {{ fields.text_color }}; } </style>

[jamacon36]

FWIW: I too was running into this and as a workaround the following worked:

// In functions.php
add_action( 'acf/init', 'timber_block_init', 10, 0 );

[palmiak]

@Sandrio84 @jamacon36 - are both of you using Timber as a plugin rather than a composer library?

If so I would probably have to check if users are using plugin or library and change this part a bit:

public function __construct() {
	if ( is_callable( 'add_action' )
		&& is_callable( 'acf_register_block_type' )
		&& class_exists( 'Timber' )
		) {
		add_action( 'acf/init', array( __CLASS__, 'timber_block_init' ), 10, 0 );
	}
}