Key "focusX" for sequence/mapping with keys "quality, width, height" does not exist.
sizes="100vw"
title="{{ image.caption }}"
alt="{{ image.caption }}"
{% if extra_class is defined %}
class="{{ extra_class }}"
{% endif %}
style="object-position: {{ image.focusCrop(3840, 2160, {'quality': 50}).modifications['focusX']*100|number_format }}% {{ image.focusCrop(3840, 2160, {'quality': 50}).modifications['focusY']*100|number_format }}%"
>
{% endif %}