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 ('0d433f1e2f4c72848a74a6c03a617e8f', -1, 1713297642, 1713297642, '12bdb4f4', -4, 0, 0)

Line : 187
File : sessions.php