I just installed and activated Specular. I tried importing a starter site but it gave me to following message:

“Something went wrong while loading the site data. Please refresh the page and try again.
Hi! It seems there is a configuration issue with your server that’s causing the import to fail. Take a look at our troubleshooting guide to see if any of the proposed solutions work.
If none of the solutions in the guide work, please get in touch with us with the error code below, so we can help you fix this.
Error code: ti__ob_failed_fetch_catch”

I have tried refreshing multiple times, shutting down browser, logging out and in again, etc. The Troubleshooting Guide link is not working.