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 ('dcc6b52f2171317fb8a652fd7ebd9cc3', -1, 1713498322, 1713498322, '12754c07', -11, 0, 0)

Line : 187
File : sessions.php