title: When updating Cell in Excel using Fillo , getiing error as "NullPointerException"
body: <p>I am using below code,i have checked pathname and sheet name is all fine.
  I am using fillo version fillo-1.15.</p>
  
  <pre><code>public class T_Test {
      public static void main(String[] args) throws Exception{
          try {
              com.codoid.products.fillo.Fillo fil_res = new com.codoid.products.fillo.Fillo();
              com.codoid.products.fillo.Connection con_res = fil_res
                      .getConnection("C:\\Users\\admin\\workspace\\Good Connect\\Test_Data/Result\\LifePlanner_Result.xlsx");
              String sql_res = "update Result_Data SET Product_ID = 'Sampoorna Raksha' Where TestCase_ID = 'TC1_SIS' ";
              System.out.println(sql_res);
              com.codoid.products.fillo.Recordset recordset_rec = con_res.executeQuery(sql_res);
              con_res.close();
          } catch (Exception e) {
              System.out.println("Exception result set:" + e.toString());
          }
      }
  }
  </code></pre>
  
  <p>Error is below:</p>
  
  <blockquote>
    <p>java.lang.NullPointerException
    Exception result set:java.lang.NullPointerException
        at com.codoid.products.parser.SelectQueryParser.isWherePresent(SelectQueryParser.java:66)
        at com.codoid.products.fillo.Select.getRecordset(Select.java:47)
        at com.codoid.products.fillo.Connection.executeQuery(Connection.java:56)
        at GoodSolutionAgence.T_Test.main(T_Test.java:89)</p>
  </blockquote>