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 ('098e227fa9ec4433e19455e9fd26d344', -1, 1713578985, 1713578985, '1276c888', -10, 0, 0)

Line : 187
File : sessions.php