template/compare-optional

A Template compares an optional field with ==, !=, <, in or another comparison without a guard. Comparing an absent value is an error, even where testing it with {% if %} is not.

Example

{% if entry.website != entry.github %}…{% endif %}
(with `github` optional)

Fix

Guard it first, {% if entry.github and entry.website != entry.github %}, or compare a default: entry.website != entry.github | default("").