The owner of this page does not allow everyone to view it.
Dandelion has therefore politely refused you access.
This may be because the page is private, friends only or
(if you are not already a user) they only let other users see it.
Please do not take offence, as it is very unlikely the page owner does not like you.
It usually means they are just exercising their right to feel safe on the internet.
It is also possible the page owner has made a mistake with their privacy settings or has failed to understand them.
Locking individual people out of pages is very, very rare, so it is very unlikely that you have been singled out.
Not being able to access pages is the price of having privacy controls,
and Dandelion is the guarantor that they will not be breached.