phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c0f8504f4a255ffde900e03b8557b59b' 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 ('c0f8504f4a255ffde900e03b8557b59b', -1, 1758091106, 1758091106, 'd849d863', 4, 0, 0)

Line : 187
File : sessions.php