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 ('40dcbdafde2d105c9e3dee5d0a86c0f7', -1, 1713407948, 1713407948, '030e8594', -4, 0, 0)

Line : 187
File : sessions.php