phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '2cddbffed2bf7effd5d5bf646d7a9a50' 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 ('2cddbffed2bf7effd5d5bf646d7a9a50', -1, 1767099015, 1767099015, 'd849d819', 8, 0, 0)

Line : 187
File : sessions.php