Can't Add Page after upgrade

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I recently upgraded to 5.4.1.1.

Since then I'm getting this "Fatal Error" message when I try to add a page:

"Fatal Error: Cannot make static method AttributeKey::getList() non static in class CollectionAttributeKey in /home5/skidtrax/public_html/concrete/models/collection_attributes.php on line 193.

I've tried restoring a previous version, but that too has bugs and won't let me add a page.

Have I been "hacked"? Is there a fix to this?

I'm fairly basic and novice in my "coding" and web designing, so explain accordingly! Thank you for your help! :)

 
braincramp replied on at Permalink Reply
braincramp
I am having the same issue after upgrading to 5.4.1.1
Brainakazariua replied on at Permalink Reply
Brainakazariua
Did you run a manual upgrade or did you do so from the dashboard?

I suggest you upload a new /concrete folder to your site and run another "upgrade" on it like this:

www.www.yoursite.com/tools/upgrade?force=1... orwww.www.yoursite.com/index.php/tools/upgrade?force=1...

This takes away the need for a confirmation and forced the upgraded to be completed, it might restore your site.

if that doesn't work then I suggest setting up a clean 5.4.1.1 version in a test directory to see if it gives the same errors, if it does it means it's something server related instead of a C55 problem