I'm trying to install lainchan on nginx with debian and I get this error when I try to load install.php
Error recursion detected with Caught fatal error: Uncaught Exception: Template file 'error.html' does not exist or is empty in ''! in /var/www/lainchan/inc/template.php:75 Stack trace: #0 /var/www/lainchan/inc/error.php(88): Element('error.html', Array) #1 /var/www/lainchan/inc/error.php(12): error('Call to undefin...') #2 [internal function]: exception_handler(Object(Error)) #3 {main} thrown in /var/www/lainchan/inc/template.php at line 75
Original error:Call to undefined function mb_internal_encoding()
what do?