Uncaught TypeError: Cannot access offset of type string on string

[rawdreeg]

🔎 Isolate the bug

We received a few reports of cases where the facebook_config value is wrong. This issue is to investigate this and figure out where the erroneous value is getting set.

• I have confirmed this occurs in the most recent version of WordPress, WooCommerce, and Facebook for WooCommerce.
• I have confirmed this occurs when only WooCommerce and Facebook for WooCommerce are active and when using a default WordPress or WooCommerce theme.

✍️ Describe the bug

TBD

🚶‍♀️ Steps to reproduce

TDB

🗃 Logs

2023-07-26T13:23:59+00:00 CRITICAL Uncaught TypeError: Cannot access offset of type string on string in /home/www/web4-testserver/technology/wp-content/plugins/facebook-for-woocommerce/facebook-commerce-pixel-event.php:573 Stack trace: #0 /home/www/web4-testserver/technology/wp-content/plugins/facebook-for-woocommerce/facebook-commerce.php(409): WC_Facebookcommerce_Pixel::set_use_pii_key(true) #1 /home/www/web4-testserver/technology/wp-content/plugins/facebook-for-woocommerce/facebook-commerce.php(232): WC_Facebookcommerce_Integration->init_pixel() #2 /home/www/web4-testserver/technology/wp-content/plugins/facebook-for-woocommerce/class-wc-facebookcommerce.php(603): WC_Facebookcommerce_Integration->__construct(Object(WC_Facebookcommerce)) #3 /home/www/web4-testserver/technology/wp-includes/class-wp-hook.php(308): WC_Facebookcommerce->get_integration('') #4 /home/www/web4-testserver/technology/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters(NULL, Array) #5 /home/www/web4-testserver/technology/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #6 /home/www/web4-testserver/technology/wp-settings.php(623): do_action('init') #7 /home/www/web4-testserver/technology/wp-config.php(88): require_once('/home/www/web4-...') #8 /home/www/web4-testserver/technology/wp-load.php(50): require_once('/home/www/web4-...') #9 /home/www/web4-testserver/technology/wp-admin/admin.php(34): require_once('/home/www/web4-...') #10 {main} thrown in /home/www/web4-testserver/technology/wp-content/plugins/facebook-for-woocommerce/facebook-commerce-pixel-event.php on line 573