installation error

when i tried installing phpvms, i did all the things which include giving permission to use the final as stated in the tutorial but then faced this error:–

Fatal error: Call to a member function get_results() on a non-object in /home/a7464842/public_html/core/classes/DB.class.php on line 280

please help me resolve this error

Try re-uploading the files again.

In the first step, did you click “Check database connection”? What did that report?