Need help with error message pertaining to doc-level js

[Kemper5F9B]

I keep getting this errror message

"TypeError: this.templates is null
4:Document-Level:myResetForm"

Here's the associated code

if (app.viewerType != "Reader") {

        for (var i = 0; i < this.templates.length; i++) {

            this.templates[i].hidden = true;

        }

    }

var spawnedPages = findSpawnedPages(this);

//console.println(spawnedPages.join(","))

for (var i=spawnedPages.length-1; i>=0; i--) {

this.deletePages(spawnedPages[i], spawnedPages[i]);

}

    var notReset = ["OwnerResidenceCounty", "RBOwnerResident", "RBOwnerCitizen", "RBOwnerHear", "OwnerName", "OwnerPhone", "OwnerEmail", "OwnerSex", "OwnerDOB", "OwnerID", "OwnerMailAddress", "OwnerMailCity", "OwnerMailState", "OwnerMailZip", "CkBxSamePhysicalAddress", "OwnerPhysicalAddress", "OwnerPhysicalCity", "OwnerPhysicalState", "OwnerPhysicalZip"];

    var resetFields = [];

    for (var i = 0; i < this.numFields; i++) {

        var fname = this.getNthFieldName(i);

        if (notReset.indexOf(fname) != -1)

            continue;

        resetFields.push(fname);

    }

    this.resetForm(resetFields);

....

Originally an Acroform I uploaded to Adobe Cloud Storage but have been editing/saving back and forth using Acrobat Desktop. Could this be a factor? Adobe Sign hasn't been used, just Cloud Storage. Thanks in advance!

[Bernd Alheit]

You will get this error when the file has no template page.

[Kemper5F9B]

Thank you Bernd for your response. So I know I originally had the file without templates, then added them. And the current file has templates. Adding these templates to a Cloud-saved file as a 'modification event to the Acroform' using the "Organize Pages" tool on the Acrobat desktop, while templates are present and functioning correctly, will continue to generate this error? I see Try67's fix below (amazing as usual!) but just seeking some education. Thanks in advance!   

[try67 · Accepted solution]

There are no Templates in the file, so the templates property returns null. You need to account for that in your code, like this:

if (this.templates!=null) {

for (var i = 0; i < this.templates.length; i++) {

this.templates[i].hidden = true;

}

}

[Kemper5F9B]

Hi Try67! Yeah, it's perplexing because there are two functioning templates? Thank you Try67 for helping me! Very grateful for all you do here!! Thank you!!!

[Bernd Alheit]

Where does you use the scripts?