phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8f0976520c8559f0cfc7ed946eb9616d' 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 ('8f0976520c8559f0cfc7ed946eb9616d', -1, 1769376292, 1769376292, 'd849d814', -4, 0, 0)

Line : 187
File : sessions.php