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 ('16c3dd04a4ec3d2dfa54bd29608d8631', -1, 1730419695, 1730419695, '12de2934', -1280, 0, 0)

Line : 195
File : sessions.php