Query results timing out after 15 seconds

Thanks for making such a great theme available for public use.

We have a markdown page with 13 mermaid flow diagrams. Upon accessing the page for the first time, it times out as the results couldn't be fetched in 15 seconds. A 404 page is displayed but if we refresh after few seconds the page shows just fine. 

Is there a way to increase the timeout from 15 to say 30 seconds?