Bug fatal error with is_callable() in Query_Utils.php

Hello,

I encountered a fatal error in your plugin (ACF Views / Advanced Views) caused by this line in:

src/Post_Selections/Query/Query_Utils.php

return is_callable( $value ) ? $value() : $value;

Problem

When $value is a string like 'date', PHP considers it callable:

is_callable('date') === true

So the plugin executes:

date()

without arguments, which triggers:

PHP Fatal error: date() expects at least 1 argument, 0 given

Fix

A safer approach is to only execute real closures:

return ($value instanceof \Closure) ? $value() : $value;

Why this matters

This prevents unintended execution of native PHP functions (date, time, etc.) when they are used as string values in query arguments (e.g. orderby => 'date').

Let me know if you need more details.

Thanks for your work 👍

José.