Inability to render header pattern (new pattern lib)

Hi

I’ve forked the site of acfsailing.org into a staging site on the same server. In this stage I’ve updated to the latest issue of GP premium and Block pro. The new pattern library is lovely. However the server cannot render the ‘header’ type pattern. Specifically it reports on screen:

<code><<Your site doesn’t include support for the &quot;generateblocks-pro/site-header&quot; block. You can leave it as-is, convert it to custom HTML, or remove it.>></code>

I”m not sure what to do about this. All the other plugins are off. Browser cache is cleared, other patterns do render properly. I have switched over to allow using V2 blocks in Blocks pro. My connection is brilliant at the moment, but I’ve passed you logins to the dev site below