phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a6b368989834dbda2e8d71837a404a7d' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('a6b368989834dbda2e8d71837a404a7d', -1, 1769159407, 1769159407, 'd849d83c', 3, 0, 0)

Line : 187
File : sessions.php