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 ('deb1c97da5d6a3c8dc3d3d3e479505b7', -1, 1713524602, 1713524602, '038be92b', 0, 0, 0)

Line : 187
File : sessions.php