jQuery not defined

[JUG]

I am experiencing similar error. It looks like that error message (registration fields) is causing this kind of error:

Code:

Uncaught ReferenceError: $jQuery is not defined

The error message looks like this:
<pre>

Code:

<ul class="bg-danger">
<li class="text-danger">Email must be a valid email address.</li>
<script>$jQuery("#Email must be a valid email address.").parent().closest("div").addClass("has-error");</script>
</ul>

</pre>


I believe that every occurance of $jQuery should be replaced just with $ sign.

I tried to locate these scripts with no success. I found similar messages in users/classes/Validate.php and in users/helpers/helpers.php and try to modify it, but the error message still occurs with $jQuery instead of just $.

Can you direct me to the files where that error messages are created?