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 ('41cae3e1ec40a355cafeb1a3b9c48125', -1, 1748502948, 1748502948, '12d9b13c', -9, 0, 0)

Line : 190
File : sessions.php