Так с загрузкой разобрались, теперь другая ошибка:
ErrorException: tempnam(): open_basedir restriction in effect. File(/tmp) is not within the allowed path(s): (/var/www/user77/data:.) (2)
#0 [internal function]: IPS\IPS::errorHandler(2, 'tempnam(): open...', '/var/www/user77...', 163, Array)
#1 /var/www/user77/data/www/forum.site.com/applications/core/modules/admin/languages/languages.php(163): tempnam('/tmp', 'IPS')
#2 [internal function]: IPS\core\modules\admin\languages\_languages->form()
#3 /var/www/user77/data/www/forum.site.com/system/Dispatcher/Controller.php(85): call_user_func(Array)
#4 /var/www/user77/data/www/forum.site.com/system/Node/Controller.php(63): IPS\Dispatcher\_Controller->execute()
#5 /var/www/user77/data/www/forum.site.com/applications/core/modules/admin/languages/languages.php(39): IPS\Node\_Controller->execute()
#6 /var/www/user77/data/www/forum.site.com/system/Dispatcher/Dispatcher.php(129): IPS\core\modules\admin\languages\_languages->execute()
#7 /var/www/user77/data/www/forum.site.com/admin/index.php(13): IPS\_Dispatcher->run()
#8 {main}