Hi everyone,
I'm just installed osticket I would like change language but after clicked save changes any doesn't changes. I tried installed a few other language and problem is the same, working only English. I changed in admin panel for everyone and profile user. Do you have any ideas?

My specs:
osTicket Version v1.15.3.1 (65ca4e6) — Up to date
Web Server Software Apache/2.4.48 (Debian)
MySQL Version 8.0.26
PHP Version 7.4.23

Logs from php:
[Tue Sep 14 17:22:16.890630 2021] [mpm_prefork:notice] [pid 759] AH00170: caught SIGWINCH, shutting down gracefully [Tue Sep 14 17:22:17.106121 2021] [mpm_prefork:notice] [pid 961] AH00163: Apache/2.4.48 (Debian) configured -- resuming normal operations [Tue Sep 14 17:22:17.106228 2021] [core:notice] [pid 961] AH00094: Command line: '/usr/sbin/apache2' [Tue Sep 14 17:22:57.441049 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: include(): Filename cannot be empty in /var/www/html/osTicket/include/class.translation.php on line 565, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.441124 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: include(): Failed opening '' for inclusion (include_path='./:/var/www/html/osTicket/include/:/var/www/html/osTicket/include/pear/') in /var/www/html/osTicket/include/class.translation.php on line 565, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.441496 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.441537 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.441552 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.441565 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.441578 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.441590 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.441602 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.441618 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.441631 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.441643 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.441656 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.441668 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.487993 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: include(): Filename cannot be empty in /var/www/html/osTicket/include/class.translation.php on line 565, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.488049 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: include(): Failed opening '' for inclusion (include_path='./:/var/www/html/osTicket/include/:/var/www/html/osTicket/include/pear/') in /var/www/html/osTicket/include/class.translation.php on line 565, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.488152 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.488179 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.488193 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.488204 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.488216 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.488227 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.488239 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.488254 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.488266 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.488278 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.488289 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:22:57.488301 2021] [php7:warn] [pid 967] [client 192.168.0.3:62578] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/profile.php [Tue Sep 14 17:23:02.205402 2021] [php7:warn] [pid 969] [client 192.168.0.3:62580] PHP Warning: include(): Filename cannot be empty in /var/www/html/osTicket/include/class.translation.php on line 565, referer: http://192.168.0.1/osTicket/scp/settings.php [Tue Sep 14 17:23:02.205490 2021] [php7:warn] [pid 969] [client 192.168.0.3:62580] PHP Warning: include(): Failed opening '' for inclusion (include_path='./:/var/www/html/osTicket/include/:/var/www/html/osTicket/include/pear/') in /var/www/html/osTicket/include/class.translation.php on line 565, referer: http://192.168.0.1/osTicket/scp/settings.php [Tue Sep 14 17:23:02.205896 2021] [php7:warn] [pid 969] [client 192.168.0.3:62580] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/settings.php [Tue Sep 14 17:23:02.205933 2021] [php7:warn] [pid 969] [client 192.168.0.3:62580] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/settings.php [Tue Sep 14 17:23:02.205948 2021] [php7:warn] [pid 969] [client 192.168.0.3:62580] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/settings.php [Tue Sep 14 17:23:02.205960 2021] [php7:warn] [pid 969] [client 192.168.0.3:62580] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/settings.php [Tue Sep 14 17:23:02.205972 2021] [php7:warn] [pid 969] [client 192.168.0.3:62580] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/settings.php [Tue Sep 14 17:23:02.205984 2021] [php7:warn] [pid 969] [client 192.168.0.3:62580] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/settings.php [Tue Sep 14 17:23:02.206000 2021] [php7:warn] [pid 969] [client 192.168.0.3:62580] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/settings.php [Tue Sep 14 17:23:02.206012 2021] [php7:warn] [pid 969] [client 192.168.0.3:62580] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/settings.php [Tue Sep 14 17:23:02.206023 2021] [php7:warn] [pid 969] [client 192.168.0.3:62580] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/settings.php [Tue Sep 14 17:23:02.206035 2021] [php7:warn] [pid 969] [client 192.168.0.3:62580] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/settings.php [Tue Sep 14 17:23:02.206046 2021] [php7:warn] [pid 969] [client 192.168.0.3:62580] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/settings.php [Tue Sep 14 17:23:02.206058 2021] [php7:warn] [pid 969] [client 192.168.0.3:62580] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/settings.php [Tue Sep 14 17:23:06.051680 2021] [php7:warn] [pid 970] [client 192.168.0.3:62589] PHP Warning: include(): Filename cannot be empty in /var/www/html/osTicket/include/class.translation.php on line 565, referer: http://192.168.0.1/osTicket/scp/settings.php?t=system [Tue Sep 14 17:23:06.051773 2021] [php7:warn] [pid 970] [client 192.168.0.3:62589] PHP Warning: include(): Failed opening '' for inclusion (include_path='./:/var/www/html/osTicket/include/:/var/www/html/osTicket/include/pear/') in /var/www/html/osTicket/include/class.translation.php on line 565, referer: http://192.168.0.1/osTicket/scp/settings.php?t=system [Tue Sep 14 17:23:06.052111 2021] [php7:warn] [pid 970] [client 192.168.0.3:62589] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/settings.php?t=system [Tue Sep 14 17:23:07.521216 2021] [php7:warn] [pid 968] [client 192.168.0.3:62592] PHP Warning: include(): Filename cannot be empty in /var/www/html/osTicket/include/class.translation.php on line 565, referer: http://192.168.0.1/osTicket/scp/settings.php?t=pages [Tue Sep 14 17:23:07.521283 2021] [php7:warn] [pid 968] [client 192.168.0.3:62592] PHP Warning: include(): Failed opening '' for inclusion (include_path='./:/var/www/html/osTicket/include/:/var/www/html/osTicket/include/pear/') in /var/www/html/osTicket/include/class.translation.php on line 565, referer: http://192.168.0.1/osTicket/scp/settings.php?t=pages [Tue Sep 14 17:23:07.521616 2021] [php7:warn] [pid 968] [client 192.168.0.3:62592] PHP Warning: array_key_exists() expects parameter 2 to be array, bool given in /var/www/html/osTicket/include/class.translation.php on line 419, referer: http://192.168.0.1/osTicket/scp/settings.php?t=pages

Thanks for help,
Best regards,
B