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 ('fa53524835326ac282a9fbb8e04c9d56', -1, 1713879025, 1713879025, '12778348', -10, 0, 0)

Line : 187
File : sessions.php