Facebook sharing not working

Hi

I try to publish my entries directly to Fb but they don’t show up.

https://developers.facebook.com/tools/debug/og/object/ tells me the following:

Inferred Property The ‘og:url’ property should be explicitly provided, even if a value can be inferred from other tags.
Inferred Property The ‘og:title’ property should be explicitly provided, even if a value can be inferred from other tags.
Inferred Property The ‘og:description’ property should be explicitly provided, even if a value can be inferred from other tags.
Inferred Property The ‘og:image’ property should be explicitly provided, even if a value can be inferred from other tags.

Which I cannot understand. I disabled all plugins (except for Jetpack and Meta Tags but it still shows the same error.

Can anybody help me?