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 ('8d7c4a23bba21579bd6a418a3f6a6eb2', -1, 1713561845, 1713561845, '340efdaa', -10, 0, 0)

Line : 187
File : sessions.php