The Title-Tag has not been set or has been left empty. This information needs to be available for any page that should be indexed.

A page that is being linked-to internally cannot be found. Maybe the URL has changed or the page has moved?

All of these pictures do not use the alt-attribute. This attribute helps Google to understand what an image is about.

Google may use the meta-description tag to construct the snippets that they show with your search result. By leaving this tag empty, you are giving away a powerful tool to catch a users interest in your site and increase your click-through-rate.

The "keywords" meta-tag is in use on some pages. Google does not use this meta-tag.

We found at least 5 JavaScript-files embedded within the page. You should check to see if those files can be combined to increase the speed with which the page will load.