XF 2.1 Images not coming in the facebook share

Hi team,

When i share my website url in facebook, i cant able to see the images or preview

the following errors are displaying,

Warnings That Should Be Fixed
  • Inferred Property
    The 'og:image' property should be explicitly provided, even if a value can be inferred from other tags.
  • Missing Properties
    The following required properties are missing: og:url, og:type, og:title, og:image, og:description, fb:app_id
Please somebody help to to solve.

thank you