Notice: Undefined index: factnum in C:\Apache24\htdocs\real\stock\estafact.php on line 26

Fatal error: Uncaught PDOException: SQLSTATE[42000]: [Microsoft][ODBC Driver 17 for SQL Server][SQL Server]Incorrect syntax near the keyword 'AND'. in C:\Apache24\htdocs\real\stock\estafact.php:41 Stack trace: #0 C:\Apache24\htdocs\real\stock\estafact.php(41): PDOStatement->execute() #1 {main} thrown in C:\Apache24\htdocs\real\stock\estafact.php on line 41