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 ('9f55df81d1d5bf9a8a7ef547217bfc19', -1, 1713560523, 1713560523, '0387c3f9', -11, 0, 0)

Line : 187
File : sessions.php