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 ('949dc41933a6c7ec4f428043b8c7da91', -1, 1713533909, 1713533909, '12d87937', -10, 0, 0)

Line : 187
File : sessions.php