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 ('135ba695e0d2a7522bda2733901c33e1', -1, 1714033409, 1714033409, '038593fc', -1, 0, 0)

Line : 187
File : sessions.php