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 ('6de5609a0d32c6e8732ca0f140e0ad24', -1, 1714569795, 1714569795, '0395fe23', -4, 0)

Line : 158
File : sessions.php