Josephyap Posted July 25, 2015 Share Posted July 25, 2015 Whenever I tried to add products, it shows me below error, Fatal error: Call to a member function getUpgradeProductIds() on a non-object in /home/thankt12/public_html/billing/admin/configproducts.php on line 0 This is really frustrating, I've trying to reinstall more than 3 times, and switching different PHP This error doesn't go a way, the page is just showing blank. I also found that there's a thread about the same issue, but left unsolved. https://forum.whmcs.com/showthread.php?102987-Unable-to-save-settings-or-add-products-in-v6-0 I do not have resellerclub module. 0 Quote Link to comment Share on other sites More sharing options...
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