phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'cff16cc7cac1fffcad8e990190185ebe' 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 ('cff16cc7cac1fffcad8e990190185ebe', -1, 1752563754, 1752563754, 'd849d8d7', 1, 0, 0)

Line : 187
File : sessions.php