phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8709bf8fe0c374c8bddcb24bff9918d5' 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 ('8709bf8fe0c374c8bddcb24bff9918d5', -1, 1767179169, 1767179169, 'd849d803', -9, 0, 0)

Line : 187
File : sessions.php