$removeFields  = array(
      'utm_source','utm_medium','utm_term','utm_content','utm_campaign',          // google utm names: http://www.google.com/support/googleanalytics/bin/answer.py?answer=55578
      'fb_source','fb_action_ids','fb_action_types','fb_ref','fb_aggregation_id', // facebook parameter names: https://developers.facebook.com/docs/technical-guides/opengraph/link-parameters/
      'action_object_map','action_type_map','action_ref_map',                     // additional facebook parameters
      '_hsenc','_hsmi',                     // additional hubspot parameters
    );
    foreach ($removeFields as $removeField) { $urlData = preg_replace("/&$removeField=[^&]*/", '', $urlData); }


In CMS Builder we added code to remove 3rd party field-value pairs from query string as they might contain trailing numbers.

This post by Dave shows some of the fields that are removed:
https://www.interactivetools.com/forum/forum-posts.php?postNum=2229724#post2229724 

You can add to the list the additional fields to filter:

'_hsenc','_hsmi',

Let me know if you have any questions about this and if it solves the error.

Thanks!

Original page URL:
https://www.sitename.com/section/?Page-Name-2 

Hubspot tracking URL:
https://www.sitename.com/section/?Page-Name-2&utm_campaign=Current+Leads+Opt+In&utm_source=hs_email&utm_medium=email&utm_content=25098955&_hsenc=p2ANqtz--x0HlCWUyJGvnqJIYQ0H1lkEGrawkvf_UIXTe6z8URyioHeRYEqGb-yYRT6S-oO83JL7y_kRt8ByEl7oIIuwKlw4KBBA&_hsmi=25099732

The Hubspot URLs are causing the pages to error out due to the CMS portion not being at the end of the URL. Any thoughts on how to resolve this?