phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'dca9c8fa770e589fe30c7d90949b83ea' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('dca9c8fa770e589fe30c7d90949b83ea', -1, 1768365665, 1768365665, 'd849d8a4', -9, 0)

Line : 180
File : /www/includes/sessions.php