unknown error occured

Just signed up and am optimizing my pics in bulk, but I’m getting a lot of failures occurring with an “unknown error occured” message. In fact I’m getting more errors than completed images. See screenshots:

https://www.mugatea.co.uk/error.jpg

https://www.mugatea.co.uk/error2.jpg

• This topic was modified 7 years, 11 months ago by mugatea.
• This topic was modified 7 years, 11 months ago by mugatea.

The page I need help with: [log in to see the link]