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 ('7f1f82824e63696d13707c56a8ebb091', -1, 1634646147, 1634646147, '03ed10d2', -1, 0, 0)

Line : 187
File : sessions.php