[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/session.php on line 640: Trying to access array offset on value of type bool
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/session.php on line 642: Trying to access array offset on value of type bool
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/session.php on line 650: Undefined array key "user_id"
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/session.php on line 1334: Undefined array key "user_type"
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/session.php on line 659: Undefined array key "user_type"
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/auth/auth.php on line 65: Undefined array key "user_permissions"
[phpBB Debug] PHP Warning: in file [ROOT]/phpbb/auth/auth.php on line 424: Undefined array key "user_type"

Fatal error: Uncaught phpbb\language\exception\language_file_not_found: Language file ./language/en/common.php couldn't be opened. in /var/www/web690/html/phpBB3/phpbb/language/language_file_loader.php:186 Stack trace: #0 /var/www/web690/html/phpBB3/phpbb/language/language_file_loader.php(143): phpbb\language\language_file_loader->get_language_file_path('./language/', 'common.php', Array) #1 /var/www/web690/html/phpBB3/phpbb/language/language_file_loader.php(77): phpbb\language\language_file_loader->load_file('./language/', 'common', Array, Array) #2 /var/www/web690/html/phpBB3/phpbb/language/language.php(625): phpbb\language\language_file_loader->load('common', Array, Array) #3 /var/www/web690/html/phpBB3/phpbb/language/language.php(384): phpbb\language\language->load_core_file('common') #4 /var/www/web690/html/phpBB3/phpbb/language/language.php(173): phpbb\language\language->load_common_language_files() #5 /var/www/web690/html/phpBB3/phpbb/user.php(574): phpbb\language\language->add_lang('common', NULL) #6 /var/www/web690/html/phpBB3/phpbb/user.php(544): phpbb\user->set_lang('common', false, NULL) #7 /var/www/web690/html/phpBB3/includes/functions.php(1724): phpbb\user->add_lang('common') #8 /var/www/web690/html/phpBB3/viewtopic.php(258): redirect('./viewtopic.php...') #9 {main} thrown in /var/www/web690/html/phpBB3/phpbb/language/language_file_loader.php on line 186