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Function "Twig_Function_Method"

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 [] []

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 [] []