It looks like the connector for Twitter was down. I just hit it now and it appears up. Please note that this is not a Tableau run service but rather a site created for showing an example of how to utilize the web data connector. You could copy the code and host the connector on your own servers if you like. The information about the connector is here - http://tableaujunkie.com/post/119681578798/creating-a-twitter-web-data-connector
I hope that helps you out and all is working okay this morning.
hmm.. i have my public viz posted here - https://public.tableau.com/views/testoftwitterapi/TableauTweets?:embed=y&:display_count=yes
it's not possible to publish the data source to public like a normal tableau server and have it auto-refresh so i'm not sure how/where this error is coming from.
Can you provide a link to the public viz and the steps that you are doing? I can try to reproduce if this is a viz on public.
and the file is on Public at:
?can i update the search from the Public site?
(i've been trying to update from my local version)
i have the same issue.
I create a Web Data Connector , use it with a dashboard , then it is uploaded when saved.
When i load it to edit : i have the error " Unable to load the following URL".