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 ('ef38b5bdc52f0a4a2b246f6449c1de2e', -1, 1747795390, 1747795390, '12dc2db3', -4, 0, 0)

Line : 189
File : sessions.php