Notice: Undefined index: balnum in C:\Apache24\htdocs\real\informes\cobtickets.php on line 29

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\informes\cobtickets.php:57 Stack trace: #0 C:\Apache24\htdocs\real\informes\cobtickets.php(57): PDOStatement->execute() #1 {main} thrown in C:\Apache24\htdocs\real\informes\cobtickets.php on line 57