ERRORS - "orders reconciliation failed. missing orders" (alpaca paper and sample YouTube algo)

When running sample algo, as per youtube video (https://www.youtube.com/watch?v=DegANUaZwOE) , in the alpaca paper account, the following errors appear:

 

[WARNING | 01/04/2020, 13:02:06] BlueShift Alert[2020-04-01 13:02:06.556124-04:00] WARNING in blotter:orders reconciliation failed. missing orders: c072284b-da33-48c0-9c7e-8c64f87eaf79. account net difference: 90718.073
 
[WARNING | 01/04/2020, 13:22:07] BlueShift Alert[2020-04-01 13:22:07.535389-04:00] WARNING in blotter:orders reconciliation failed. missing orders: e9481e03-4e3b-4cba-94a6-69422ea698f2. positions reconciliation failed.unexplained: {AlpacaAsset(BA [-1]): 1}. account net difference: 90725.368


What is the meaning? How to fix?