phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('b5784da3e8b1bef7d2ec1f4a7c6694d0', -1, 1752388593, 1752388593, '54ccfc03', -4, 0, 0)

Line : 187
File : sessions.php