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 ('16b8ea4e5b7a7be83d3a829df6ca56a8', -1, 1713402917, 1713402917, '0d3bf3c2', -11, 0, 0)

Line : 187
File : sessions.php