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) VALUES ('6f9018dcf6f82e5f2740d29734caf41f', -1, 1714630431, 1714630431, '030e8218', 17, 0)

Line : 158
File : sessions.php