Fatal error: Class 'mysqli' not found in /home/bioyco/public_html/test/qa-include/qa-db.php on line 66
How to i fix it/
Look at http://stackoverflow.com/questions/666811/fatal-error-class-mysqli-not-found I suggest you check your server have mysqli installed
It's been also mentioned here: http://www.question2answer.org/qa/42848/fatal-error-class-mysqli-found-tvpoket-public_html-include
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