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 ('de27ce3b2f252408eac50cc5d20f4094', -1, 1713513293, 1713513293, '0315f82f', 2, 0, 0)

Line : 187
File : sessions.php