# Function "Twig\_Function\_Method"

**URL:** https://forum.mautic.org/t/function-twig-function-method/4417
**Category:** Product Support
**Created:** [June 14, 2016, 5:32pm UTC](https://forum.mautic.org/t/function-twig-function-method/4417 "2016-06-14T17:32:04Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![beetosantos](https://avatars.discourse-cdn.com/v4/letter/b/c5a1d2/32.png) [@beetosantos](https://forum.mautic.org/u/beetosantos)
#### Post date: [June 14, 2016, 5:32pm UTC](https://forum.mautic.org/t/function-twig-function-method/4417/1 "2016-06-14T17:32:04Z")

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I use Mautic version 1.4.  
  
  
  
I found the error above:  
  
  
  
mautic.ERROR: Fatal: Using an instance of “Twig\_Function\_Method” for function “serialization\_context” is deprecated since version 1.21. Use Twig\_SimpleFunction instead. - in file /[mypath]/classes.php - at line 5789 [] []

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### Author: ![beetosantos](https://avatars.discourse-cdn.com/v4/letter/b/c5a1d2/32.png) [@beetosantos](https://forum.mautic.org/u/beetosantos)
#### Post date: [June 14, 2016, 5:32pm UTC](https://forum.mautic.org/t/function-twig-function-method/4417/2 "2016-06-14T17:32:04Z")

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I use Mautic version 1.4.

I found the error above:

mautic.ERROR: Fatal: Using an instance of “Twig\_Function\_Method” for function “serialization\_context” is deprecated since version 1.21. Use Twig\_SimpleFunction instead. - in file /[mypath]/classes.php - at line 5789 [] []