Forum vbb portal is BUG

[vspro]

hallo.
My forum have one bug I don't kwon how I can fix that . please help

arning: main(./gallery_config.php) [function.main]: failed to open stream: No such file or directory in /home/tuoixin/public_html/world/gallery_global.php on line 52

Fatal error: main() [function.require]: Failed opening required './gallery_config.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/tuoixin/public_html/world/gallery_global.php on line 52