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 ('18f9c640c2c58dd7abfadc13f198a97b', -1, 1713259179, 1713259179, '038d6478', -11, 0, 0)

Line : 187
File : sessions.php