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hi there all

i wondered if any of you have any thought on my problem i had a while bk on an error that keeps coming up at the login page to the admin cp underneath user name /password and the bottom of the admin home page here is the 2 errors 1st one login page page


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Fatal error: Cannot redeclare class databaseEngine in /home/thunder/public_html/community/inc/db_mysqli.php on line 13

and the bottom of main admin cp home page

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Fatal error: Cannot redeclare class databaseEngine in /home/thunder/public_html/community/inc/db_mysqli.php on line 13

the forums is linked to my main site
if i add a different theme it seems to go away
as i dont know coding and altering things as ill break it lol

thanks in advance any help you can offer