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 ('61fff43b23f41f3a2b1ca5a4b9e0a8f0', -1, 1713996886, 1713996886, '12da3d10', 3, 0, 0)

Line : 187
File : sessions.php