Error in getting topic and posts(Connection Problem)

I am getting this issue when I am trying to get a topic and its posts. What can be the reason.

How are You trying to ‘Get’ the topic?

If you mean that you’re just clicking the link and it’s not loading, check your internet connection or your forum server if it is working as expected.

If otherwise, please be specific.

N.B. this isn’t a #dev question but a #support question.

Did you check the error logs?