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Hi @celinech
This is just a WordPress related notice (not an error) and you can hide it on the staging site by editing this file (on the staging site’s directory) “/wp-config.php” and add this line:
define( 'WP_DEBUG', false );
If that doesn’t work, please add these lines instead:
define( 'WP_DEBUG', true );
define( 'WP_DEBUG_LOG', true );
define( 'WP_DEBUG_DISPLAY', false );
P.S. If these lines already there, make sure to adjust their values according to what I wrote above, and don’t create duplicates of these lines.
Let me know how it goes,
Thanks,
Alaa