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 ('e977be9c7d8dea75b91dff478e44b80d', -1, 1713925949, 1713925949, '12bdaa11', -4, 0, 0)

Line : 187
File : sessions.php