Web search returns with error

It’s too bad that still none of the web searches work. I think it is a must have feature in any bibliography management software nowadays (well, it was even 10 years ago…) to provide some automated way to fill out the necessary details from the web. Is there something I miss? Any bugfix, or an alternative way?

Update: The document data is fetched from the DOI in the Library->New Entry (Ctrl+N) window.