# mautic.ERROR: PHP Error: Argument 1

**URL:** <https://forum.mautic.org/t/mautic-error-php-error-argument-1/5950>\
**Category:** General Discussion\
**Created:** [February 29, 2016, 7:59pm UTC](https://forum.mautic.org/t/mautic-error-php-error-argument-1/5950 "2016-02-29T19:59:40Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![xstax](https://avatars.discourse-cdn.com/v4/letter/x/8491ac/32.png) [@xstax](https://forum.mautic.org/u/xstax)\
**Post date:** [February 29, 2016, 7:59pm UTC](https://forum.mautic.org/t/mautic-error-php-error-argument-1/5950/1 "2016-02-29T19:59:40Z")

</div>

I am getting this error below when attempting to send an e-mail.  
  
  
  
Any idea how I can fix this? It was sending properly before.  
  
  
  
[2016-02-29 19:54:30] mautic.ERROR: PHP Error: Argument 1 passed to MauticCoreBundleEntityIpAddress::setDoNotTrackList() must be of the type array, null given, called in /home/click/public\_html/clients/legal/3/app/bundles/CoreBundle/Factory/MauticFactory.php on line 660 and defined - in file /home/click/public\_html/clients/legal/3/app/bundles/CoreBundle/Entity/IpAddress.php - at line 151 [] []

---

<div class="post-metadata">

**Author:** ![xstax](https://avatars.discourse-cdn.com/v4/letter/x/8491ac/32.png) [@xstax](https://forum.mautic.org/u/xstax)\
**Post date:** [February 29, 2016, 7:59pm UTC](https://forum.mautic.org/t/mautic-error-php-error-argument-1/5950/2 "2016-02-29T19:59:40Z")

</div>

I am getting this error below when attempting to send an e-mail.

Any idea how I can fix this? It was sending properly before.

[2016-02-29 19:54:30] mautic.ERROR: PHP Error: Argument 1 passed to MauticCoreBundleEntityIpAddress::setDoNotTrackList() must be of the type array, null given, called in /home/click/public\_html/clients/legal/3/app/bundles/CoreBundle/Factory/MauticFactory.php on line 660 and defined - in file /home/click/public\_html/clients/legal/3/app/bundles/CoreBundle/Entity/IpAddress.php - at line 151 [] []

---

<div class="post-metadata">

**Author:** ![escopecz](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/escopecz/32/370_2.png) [@escopecz](https://forum.mautic.org/u/escopecz)\
**Post date:** [March 3, 2016, 8:06am UTC](https://forum.mautic.org/t/mautic-error-php-error-argument-1/5950/3 "2016-03-03T08:06:44Z")

</div>

Can you provide steps to replicate?