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 ('e7e4b450213d5ecab8fe952ba2489323', -1, 1713457796, 1713457796, '0389b043', -11, 0, 0)

Line : 187
File : sessions.php