[Plugin: Web Invoice – Invoicing and billing for WordPress] Sending Reminder Error
Hope all is well. I just wanted to report an error I experienced today.
Strict Standards: is_a(): Deprecated. Please use the instanceof operator in /home/[user]/[website]/wp-includes/pluggable.php on line 281
This was created when I was on the “Web Invoice” page and used the bulk action to “Send Reminders”.
Looking forward to the next update.
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