We have GAC manger small application available in github.

Download the application 

 Check your existing file Might be checked out the form some other name.

                    or

Export the .xsn file.

Open the SP designer

Then All the folder>open the list and Save the xsn in the forms folder

Retry the publish with that location

We can add the content editor or script editor webpart 

d = $("#myDatepicker1").datepicker("getDate");

$("#myDatepicker2").datepicker("setDate", new Date(d.getFullYear()+1,d.getMonth(),d.getDate()));

 Method 1:

$.getScript("js/jquery.min.js", function () {

});

Method 2:

$(document).ready(function(){

 

 $.getScript("largejs.js"); 

});

function SetAndResolvePeoplePicker(fieldName, userAccountName) {

var controlName = fieldName;

var peoplePickerDiv = $("[id$='ClientPeoplePicker'][title='" + controlName + "']");

var peoplePickerEditor = peoplePickerDiv.find("[title='" + controlName + "']");

var spPeoplePicker = SPClientPeoplePicker.SPClientPeoplePickerDict[peoplePickerDiv[0].id];

peoplePickerEditor.val(userAccountName);

spPeoplePicker.AddUnresolvedUserFromEditor(true);

//disable the field

spPeoplePicker.SetEnabledState(false);

//hide the delete/remove use image from the people picker

$('.sp-peoplepicker-delImage').css('display','none');

}