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 ('977a4092644fcf77b52a073d25e892fd', -1, 1713929116, 1713929116, '0390549b', -11, 0, 0)

Line : 187
File : sessions.php