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 ('6d9bc5bd0991d2de10456c0f1064128f', -1, 1713877763, 1713877763, '03889a67', -10, 0, 0)

Line : 187
File : sessions.php