phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'd9b7800ed06bfeb83d84162952bd1c65' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('d9b7800ed06bfeb83d84162952bd1c65', -1, 1769803313, 1769803313, 'd849d83d', -4, 0, 0)

Line : 187
File : sessions.php