Horde

Help I am receiving these error's installing Horde

Warning: logmessage(Log.php): failed to open stream: No such file or directory in /var/www/html/squirrelmail/horde/lib/Horde.php on line 186

Warning: logmessage(): Failed opening 'Log.php' for inclusion (include_path='.:/usr/local/lib/php') in /var/www/html/squirrelmail/horde/lib/Horde.php on line 186

Don't install Horde into the squirrelmail folder

nope just disable logginng in config.php

or install loggin part of php