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 ('47b873e90c520a7e6b752115dcf8c5fc', -1, 1713628256, 1713628256, '0389c003', -10, 0, 0)

Line : 187
File : sessions.php