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 ('b1de336a0e4bac518fa5d98554c5392c', -1, 1713513442, 1713513442, '0389aab7', 7, 0, 0)

Line : 187
File : sessions.php