How do I find the public URL of the RStudio connect server? - r-markdown

I am trying to publish an RMarkdown document that I have edited in RStudio. but it's unfortunate that I am quite confused the way I need to go about this publishment.
I am requested to Enter the Public URL of the RStudio Connect server:
I searched through internet, how I can find this URL but I have failed to find it. I even filled the form on https://rstudio.com/products/connect/ but did not yield any positive result.
Kindly help to know what is wrong with my Rstudio connect and what I do to address this issue.
thank you in advance!
Below is the the screenshot of the message I am being given.
enter image description here

I finally found that the error I was experiencing is due to the location of the project location (directory) I am working with which was different from the current directory.
In addition to this, I found that I needed to knit the document to html before proceeding to publishing it.
The issue has been now addressed, thanks!

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