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 ('aadcc223f62d889a1eb0be7c6a80e376', -1, 1714037453, 1714037453, '12bf2e24', -4, 0, 0)

Line : 187
File : sessions.php