Error 403 on Posts

Good Morning. I recently moved my blog https://www.liplekker.blogspot.com to https://www.liplekker.co.za On webmastertools I do get Error 403 on some posts. Here is an example: https://www.liplekker.co.za/?br=https://liplekker.blogspot.com/2011/06/vars-mieliesop.html

This ie the explenation from Google :
Googlebot couldn’t crawl your URL because your server either requires authentication to access the page, or it is blocking Googlebot from accessing your site.

How can I fix the errors. I can get into my site without any problems, it is only with a few posts that I do have the problem.

Yout help is appreciated.