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 ('968df0ed68d0192ab4729d3d53770725', -1, 1713570992, 1713570992, '03916969', -10, 0, 0)

Line : 187
File : sessions.php