liquid: Include dynamic filename is not working

When i use

{% include folder1/folder1_1/img.jpg %}

it works perfectly, But when i try to generate the filename dynamically let’s say :

{%capture filename %} {{'folder1/folder1_1/'}}{{ images[0] }}{{ '.jpg' }}{% endcapture %}

{% include {{ filename }}  %}

with images[0] = 'img' for example, i get the error that says :

Liquid Exception: Invalid syntax for include tag. File contains 
invalid characters or sequences ...

I Don’t understand why including file by providing the complete path(static path) works whereas generating the filename dynamically won’t work !

Any help would be more than appreciated.

About this issue

Pretty sure it’s the space (see here).

Please try without it. Also your capture can be simplified… Try this:

{% capture filename %}folder1/folder1_1/{{ images[0] }}.jpg{% endcapture %}
{% include {{ filename }} %}