PHP Warning: Trying to access array offset on value of type null

Hi @webparaplan

Thanks for sharing the error messages you are seeing.

Could you please confirm where you are seeing these messages please?

It will be also great if you could share your current System Status Report. You can get it by navigating to the WooCommerce / Status section of your site.

Once there, click on the Get system report button and then copy it by clicking on the Copy for support button. Then paste it here in a comment.

Lastly can you confirm when these errors first started appearing?

We will be standing by for your response.

Hello. The same thing happens to me too. The error is seen in publich.html/php_errorlog :

[21-Jul-2021 21:30:03 UTC] PHP Warning:  array_key_exists() expects parameter 2 to be array, null given in /home/customer/www/titowhisky.com/public_html/wp-content/plugins/facebook-for-woocommerce/includes/Feed/FeedConfigurationDetection.php on line 110
[21-Jul-2021 21:30:03 UTC] PHP Warning:  array_key_exists() expects parameter 2 to be array, null given in /home/customer/www/titowhisky.com/public_html/wp-content/plugins/facebook-for-woocommerce/includes/Feed/FeedConfigurationDetection.php on line 122
[22-Jul-2021 18:37:23 UTC] Failed to insert log entry: 
[22-Jul-2021 21:30:03 UTC] PHP Warning:  array_key_exists() expects parameter 2 to be array, null given in /home/customer/www/titowhisky.com/public_html/wp-content/plugins/facebook-for-woocommerce/includes/Feed/FeedConfigurationDetection.php on line 110
[22-Jul-2021 21:30:03 UTC] PHP Warning:  array_key_exists() expects parameter 2 to be array, null given in /home/customer/www/titowhisky.com/public_html/wp-content/plugins/facebook-for-woocommerce/includes/Feed/FeedConfigurationDetection.php on line 122
[25-Jul-2021 21:30:03 UTC] PHP Warning:  array_key_exists() expects parameter 2 to be array, null given in /home/customer/www/titowhisky.com/public_html/wp-content/plugins/facebook-for-woocommerce/includes/Feed/FeedConfigurationDetection.php on line 110
[25-Jul-2021 21:30:03 UTC] PHP Warning:  array_key_exists() expects parameter 2 to be array, null given in /home/customer/www/titowhisky.com/public_html/wp-content/plugins/facebook-for-woocommerce/includes/Feed/FeedConfigurationDetection.php on line 122

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### WordPress Environment ###
WordPress address (URL): https://titowhisky.com
Site address (URL): https://titowhisky.com
WC Version: 5.5.2
REST API Version: ? 5.5.2
WC Blocks Version: ? 5.5.1
Action Scheduler Version: ? 3.2.1
WC Admin Version: ? 2.4.4
Log Directory Writable: ?
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WP Multisite: –
WP Memory Limit: 768 MB
WP Debug Mode: –
WP Cron: –
Language: es_AR
External object cache: –
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PHP Post Max Size: 256 MB
PHP Time Limit: 120
PHP Max Input Vars: 3000
cURL Version: 7.66.0
OpenSSL/1.1.1k-fips
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DOMDocument: ?
GZip: ?
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Remote Post: ?
Remote Get: ?
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WC Database Prefix: vtz_
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Currency: ARS ($)
Currency Position: left
Thousand Separator: .
Decimal Separator: ,
Number of Decimals: 2
Taxonomies: Product Types: external (external)
grouped (grouped)
simple (simple)
variable (variable)
Taxonomies: Product Visibility: exclude-from-catalog (exclude-from-catalog)
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featured (featured)
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### WC Pages ###
Casa matriz de la tienda: #2235 - /tienda/
Carrito: #2236 - /carro/
Finalizar compra: #2237 - /finalizar-comprar/
Mi cuenta: ? Página no definida
Términos y condiciones: ? Página no definida
### Theme ###
Name: Tito Whisky
Version: 3.1 - QTY Edition [13/07/21]
Author 
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Parent Theme Version: 3.0.4
Parent Theme Author URL: https://tomusborne.com
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### Templates ###
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### Action Scheduler ###
Completar: 331
Oldest: 2021-07-24 17:41:41 +0000
Newest: 2021-07-26 22:45:02 +0000
Pendiente: 2
Oldest: 2021-07-27 11:00:01 +0000
Newest: 2021-07-27 11:00:01 +0000
### Status report information ###
Generated at: 2021-07-26 19:45:08 -03:00

The notice began on July 4 and continues to this day

Hi @webparaplan @titowhisky

Thanks for sharing your status report.

We have an opened issue in regards to this PHP warning.

Our developers are working on it.

However, we don’t have any particular ETA on this.

I hope that helps!

Hi @titowhisky and @webparaplan

You can keep an eye on updates on the issue on the GitHub link and also on the extension’s version history here for when a fix is released:

– https://github.com/woocommerce/facebook-for-woocommerce/issues/2045
– https://www.ads-software.com/plugins/facebook-for-woocommerce/#developers

In the meantime I will mark this forum topic as Resolved and updates will be posted on the above places.

Thanks!

Hi there. The warning still persists.

Hi @titowhisky,

Since you’re not the person who originally started this topic and it has been marked as solved, then, per the forum guidelines, please start your own topic. We’ll be more than happy to help there ??

Make sure you add a link to this topic.

See you!