I am getting the same error:
Error in .rs.downloadFile(url = "https://cdn.posit.co/posit-ai/manifest.json", :
cannot open URL 'https://cdn.posit.co/posit-ai/manifest.json'
In addition:
Warning message:
In .rs.downloadFile(url = "https://cdn.posit.co/posit-ai/manifest.json", :
URL 'https://cdn.posit.co/posit-ai/manifest.json': status was 'Couldn't resolve host name'
and made the following post Backend Disconnected stuck in a loop