Instalar el modulo twig_tweak
<div class=’col-md-3′>
<span>{{ label }} </span>
<img src='{{ node.field_imagen.entity.fileuri|image_style(servicios_portada_300x300_) }}’ alt=»>
{{ content.field_image[0]|with(#image_style, thumbnail) }}
{{ node.field_imagen.entity.fileuri|image_style(thumbnail) }}
</div>