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 ('6eda6253f95fc31186c89813f169a402', -1, 1711649530, 1711649530, '36dd2b9b', 6, 0, 0)

Line : 187
File : sessions.php