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 ('cbd7d4dc5b86b3d6ac3b55ac29a237cf', -1, 1713575147, 1713575147, '12777d87', -4, 0, 0)

Line : 187
File : sessions.php