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 ('0de74949d4b786fde4f0227e8fbe80bc', -1, 1713567914, 1713567914, '12dc6af1', 0, 0, 0)

Line : 187
File : sessions.php