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 ('080d5a366b3c1a64ec80a4cee5d2456e', -1, 1713472915, 1713472915, '12dd35d1', 3, 0, 0)

Line : 187
File : sessions.php