Hello,
v1.10-rc.3 (907ec36)
MariaDB 10.0.27
PHP 5.6.24-0+deb8u1
time to time agent unable to login, in log such errors, helps only clear "sessions" table in db...
[INSERT INTO `ost_session` SET `session_id` = 'dpkq2csfk76fdsebo4r8l20083', `session_data` = 'csrf|a:2:{s:5:\"token\";s:40:\"f044cebc96b65936b20a1d56aa8a71eb4161b5cb\";s:4:\"time\";i:1473624490;}', `session_expire` = NOW() + INTERVAL 86400 SECOND, `user_ip` = '1.2.3.4', `user_agent` = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/601.7.8 (KHTML, like Gecko) Version/9.1.3 Safari/601.7.8'] Duplicate entry 'dpkq2csfk76fdsebo4r8l20083' for key 'PRIMARY'---- Трассировка ----#0 (root)/include/mysqli.php(204): osTicket->logDBError('DB Error #1062', '[INSERT INTO `o...')#1 (root)/include/class.orm.php(3121): db_query('INSERT INTO `os...', true, true)#2 (root)/include/class.orm.php(596): MySqlExecutor->execute()#3 (root)/include/class.ostsession.php(216): VerySimpleModel->save()#4 (root)/include/class.ostsession.php(158): DbSessionBackend->update('dpkq2csfk76fdse...', 'csrf|a:2:{s:5:"...')#5 [internal function]: SessionBackend->write('dpkq2csfk76fdse...', 'csrf|a:2:{s:5:"...')#6 [internal function]: session_write_close()#7 {main}