Undefined array key error in gn-publisher.php

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Hello, I am using the gn-publisher plugin on my website, but I get the following error message:

AH01071: Got error 'PHP message: PHP Warning: Undefined array key "gnpub_google_rev_snippet" in /var/www/vhosts/example.com/httpdocs/wp-content/plugins/gn-publisher/gn-publisher.php on line 312'

This error appears on every page of my website, and it affects the performance and loading time. I have tried to deactivate and reactivate the plugin, but the error persists. I have also checked the plugin settings, but I could not find any option related to the “gnpub_google_rev_snippet” array key. I am using the latest version of WordPress and the plugin. Could you please help me fix this issue? Thank you.

 

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