Attach (recommended) or Link to PDF file here:
[Form_MGT-7.pdf](https://github.com/mozilla/pdf.js/files/6768253/Form_MGT-7.pdf)

When we try to open the above pdf, we get in the console:
```
Warning: XFA - an error occured during parsing and binding: TypeError: x.include is not a function
```
which is caused by a typo:
https://github.com/mozilla/pdf.js/blob/b9e84ba70ec5a4a30333b9092f316c9ec7b7f079/src/core/xfa/config.js#L174
 
So fixing the typo allows to open the pdf but there is only 1 page when we have 9 in using masterpdfeditor.
this.bookend = null;
    this.border = null;
    this.break = null;
    this.calculate = null;
    this.desc = null;
    this.extras = null;
    this.keep = null;
    this.margin = null;
    this.occur = null;
    this.overflow = null;
    this.pageSet = null;
    this.para = null;
    this.traversal = null;
    this.validate = null;
    this.variables = null;
    this.area = new XFAObjectArray();
    this.breakAfter = new XFAObjectArray();
    this.breakBefore = new XFAObjectArray();
    this.connect = new XFAObjectArray();
    this.draw = new XFAObjectArray();
    this.event = new XFAObjectArray();
    this.exObject = new XFAObjectArray();
    this.exclGroup = new XFAObjectArray();
    this.field = new XFAObjectArray();
    this.proto = new XFAObjectArray();
    this.setProperty = new XFAObjectArray();
    this.subform = new XFAObjectArray();
    this.subformSet = new XFAObjectArray();
  }
  [$getSubformParent]() {