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 ('0006131e3a76d240570e4fefe67e7b8b', -1, 1714063783, 1714063783, '12dd5521', -10, 0, 0)

Line : 187
File : sessions.php