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 ('f45183d6daf7392774bb7a1c9fe2c083', -1, 1713976090, 1713976090, '038b484e', -7, 0, 0)

Line : 187
File : sessions.php