There are a few conversation about this topic, but no one that really can help me.

WordPress: http://www.cargo-websites.eu/demo-1/voorraad/

For a DNS integration I should add a script in the head of header.php:

<script type="text/javascript" src="http://voorraad.cargo-websites.eu/demo-1/voorraad/js/include.js"></script>

As soon as I add this code, the page returns the following errors:

Uncaught TypeError: Cannot read property 'scrollHeight' of null
    at responseIt (include.js:5)
    at window.onresize (include.js:4)
    at Object.trigger (jquery.js:3)
    at Object.a.event.trigger (jquery-migrate.min.js:2)
    at jquery.js:3
    at Function.each (jquery.js:2)
    at a.fn.init.each (jquery.js:2)
    at a.fn.init.trigger (jquery.js:3)
    at theme.js:78
    at theme.js:94
include.js:5 Uncaught TypeError: Cannot read property 'scrollHeight' of null
    at responseIt (include.js:5)
    at window.onresize (include.js:4)

And consequently, the header-img on that page disappear.

I found this “how to” for fix the problem but it’s far away from my knowledge. Any suggestion for solve this issue?

Read more here: Uncaught TypeError: Cannot read property ‘scrollHeight’ of null


Solution:

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