After accepting the cookies, only a white page is displayed

This problem usually goes back to an old Google Analytics script that contains the document.write command. The following script is the problematic integration:

<script type="text/javascript">
var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
</script>

Instead of document.write, DOM-manipulation functions such as insertBefore and appendChild should be used. The script should therefore be adapted and could then look like this, for example:

<script type="text/javascript">
var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
var script = document.createElement('script');
script.src = gaJsHost + 'google-analytics.com/ga.js';
document.head.appendChild(script);
</script>

The above code replaces the original integration with document.write with the creation of the script-element using document.createElement and the integration into the DOM-tree using document.head.appendChild. Once the code on the page has been replaced, the page should no longer turn white after accepting the cookies.

Similarly, similar scripts that use document.write to include scripts can be updated.