Warning: count(): Parameter must be an array or an object that implements Countable

[Azraelir]

An exception has been thrown during the rendering of a template ("Warning: count(): Parameter must be an array or an object that implements Countable").
500 Internal Server Error - Twig_Error_Runtime
1 linked Exception: ContextErrorException »

I encounter this issue in symfony 3.1.10 and PHP 7.2(x64) with "dev-master" branch.
if i switch to PHP 5.6 all is well and bundle does work.

any idea how to solve this?

[Azraelir]

it seems that this error is the same as:

#812 (comment)

but no solution so far.

[Azraelir]

updating the twig solved the problem.

Updating twig/twig (v1.31.0 => v1.39.1)