BugHerd with just the bug pin works great. But some issues are better resolved by being able to see exactly what the person saw on your site. This can be accomplished by grabbing a screenshot of the site when they report a bug.
To collect a screenshot the person reporting the bug needs to have the BugHerd browser extension installed.
If you've received a task without a screenshot attached then you should check with the person that reported it to verify that they have the browser extension installed.
You can install the browser extension by going to https://www.bugherd.com/extensions and selecting your browser.