Public Page Is Not Accessible For Sites

Using Neos & Flow
1

Hello,
I created the 2 site below.

First (nodename=first,domain=dev.com)
Second (nodename=second,domain=test.com).
But I am not able to access the public page unless add the below line in Policy.yaml in sites package.

‘Neos.Flow:Everybody’:
privileges:
privilegeTarget: ‘Neos.Demo:Site.First’
permission: GRANT

And I don’t want to give the all the permission to Everybody.
I just want the all public pages for both site has to be access through the frontend user.

It gives the below exception.

# Could not convert target type “Neos\ContentRepository\Domain\Model\NodeInterface”: Entity of type ‘Neos\Neos\Domain\Model\Site’ for IDs Persistence_Object_Identifier(408056f5-ab3b-4c7e-adb8-0d50be724e85) was not found"

Any suggestion will help me.

2

Please use the code feature to make your code easily readable.

Also it would help to see your whole policy yaml where you also define the privilege.