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.
constructor(attributes) {
    super(TEMPLATE_NS_ID, "comb");
    this.id = attributes.id || "";
    this.numberOfCells = getInteger({
      data: attributes.numberOfCells,
      defaultValue: 0,
      validate: x => x >= 0,
    });
    this.use = attributes.use || "";
    this.usehref = attributes.usehref || "";
  }
}
class Connect extends XFAObject {
  constructor(attributes) {
    super(TEMPLATE_NS_ID, "connect",  true);
    this.connection = attributes.connection || "";
    this.id = attributes.id || "";
    this.ref = attributes.ref || "";
    this.usage = getStringOption(attributes.usage, [
      "exportAndImport",
      "exportOnly",
      "importOnly",
    ]);
    this.use = attributes.use || "";
    this.usehref = attributes.usehref || "";
    this.picture = null;
  }
}
class ContentArea extends XFAObject {