phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'acc05cc5a191da7d7760e2f78f548df4' for key 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin, is_robot) VALUES ('acc05cc5a191da7d7760e2f78f548df4', -1, 1743710106, 1743710106, '1277846b', 0, 0, 0, '0')

Line : 187
File : sessions.php