Multiple warnings when creating a new invoice

  • umbertofederico

    (@umbertofederico)


    5 years, 7 months ago

    Hello there!

    I’m getting this warning lately and I don’t know why.

    “Warning: Use of undefined constant option_name – assumed ‘option_name’ (this will throw an Error in a future version of PHP) in /homepages/42/d200253459/htdocs/ufp_wordpress/wp-content/plugins/invoice-king-pro/includes/admin_area.php on line 895”

    Is there an explanation and solution for this?

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