<img
	src="{@$__wcf->getPath()}images/reaction/{$reactionType->iconFile}"
	class="reactionType"
	data-reaction-type-id="{$reactionType->reactionTypeID}"
>

<img
	src="{@$__wcf->getPath()}images/reaction/{$reactionType->iconFile}"
	alt="{$reactionType->getTitle()}"
	class="reactionType"
	data-reaction-type-id="{$reactionType->reactionTypeID}"
>

Add missing alt attribute to reaction type image
Add missing alt attribute to reaction type image

See: https://community.woltlab.com/thread/281417-reaktions-icons-alt-attribut-fehlt/
