Node cannot be inserted at the specified point in the hierarchy

Why does happen subjected error in jquery when jquery is implemented in codeigniter? Did anyone face this problem earlier. Can anybody help me? I am having a problem with jquery implemented in CI....pls I need help of senior programmers....

You need to supply more and better information on just what is happening.

1. What complete error code our you getting.
2. Show your php and jQuery code so that we can check it.
3. Use the forums full editor and code tags click php in editor to paste the code in.

What did you Try? What did you Get? What did you Expect?

Joined CodeIgniter Community 2009.  ( Skype: insitfx )

You're using an invalid selector somewhere. Did you recently upgrade to jQuery 3? It throws errors on invalid selectors which were suppressed in past versions. Here's a few examples of invalid selectors that now throw errors:

Code:

$('')
$('#')

In jQuery <3 those would return an empty jQuery object in 3+ it will throw an error.

Unfortunately jQuery file was inserted repeatedly...May be for this reason it was countering error...I found it and got solved..
Thank you very much for thinking about my issue.....It was not CI fault...

Glad you located your problem. Ofcourse it wasn't CI's fault
CI is a PHP framework running on a webserver. Jquery is a third party javascript framework which runs on the clients browser. They have absolutely nothing in common.