TypeError: Drupal\twig_tools\TwigExtension\TwigConvert::base64Encode(): Argument #1 ($value) must be of type string

Add nullable possibility for base64Encode.

The base64_encode filter is a thin wrapper around the base64_encode php function: https://www.php.net/manual/en/function.base64-encode.php

Starting with PHP 8.1 passing null to non-nullable functions like base64_encode is deprecated.

You can use the string filter provided by the module to avoid this issue:

{{ null|string|base64_encode }}

abhishek_gupta1 → made their first commit to this issue’s fork.

above patch fixed the issue , also I created MR

I want to keep the twig function as close to the PHP one it uses as possible. Comment #3 has an easy way to work with nullable values.