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 ('5a4aa950c5c855198d779d2f4bf6ea8f', -1, 1714706008, 1714706008, '12d90852', -9, 0)

Line : 158
File : sessions.php