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 ('1c8c6f93cd47c26e3a2d23a033d6bd23', -1, 1713600178, 1713600178, '03915efb', -10, 0, 0)

Line : 187
File : sessions.php