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Help Can't get into WHMCS after upgrade


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I just did an upgrade from v4 to the latest version. I followed the directions and deleted the install folder. I cleared out the cash and I am able to see the admin page. However once I put in my username and password it takes me to a blank page.


What am I missing here?

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Thank you for the link. I was able to find out the error.


Fatal error: Call to undefined function getValidLanguages() in /home/evoke10/public_html/billing/includes/adminfunctions.php on line 0


That is what I am getting when I go to the page. Can you let me know from this what my problem could be?

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  • 4 weeks later...

I am getting this same error however $display_errors = true; doesn't show me anything, still a blank page on the admin home.


I've submitted a ticket but haven't heard back yet.


Any ideas? Mine was upgrading from 5.0.3 to 5.1.2



Edited by slugger
FIXED: The includes folder needed reuploading
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