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 ('020b38e61f5364ac55e891cee4aff0d4', -1, 1714398531, 1714398531, '030ca1a1', -4, 0)

Line : 158
File : sessions.php