phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('5ad9d73cc889743f666f8e282cd14016', -1, 1730478688, 1730478688, '340f5882', -1, 0, 0)

Line : 195
File : sessions.php