so basically if you are also getting this same error, the problem is bad HTML. you have a syntax in your HTML.
for example, after i looked at my code, i found what the problem was. this is what my problem was, this is the code how i had it:
<div" id="Return1318554150"></div> <div class="
do you see the problem? take a look at the <div" id= part, yeah, i have a double quote that shouldn't be there and thats what was causing the problem when i was returning the HTML with my ajax JQuery code from php. after i removed the double quotes, it worked, didnt see anymore errors.
what helped me troubleshoot my code was this:
i used the htmlentities() function to return the HTML code from my PHP file to see what HTML the PHP file was sending back.
also, i am using dreamweaver, and when i paste the code into a new HTML document, dreamweaver highligthed the problem for me.