Alloy Blog not showing older posts

Hi, I have just added a new post to to the Alloy blog but it doesn’t show - just a white screen. If I delete the new post called “Test” it works.
here is the url:
https://stapletonhouse.org/whats-new/
If you select the second post titled “Welcome Back” you just see a blank screen - not the post.
Any help appreciated.

Troubleshooting it from this end will be impossible since PHP, which Alloy is coded in, is a server-side programming language. I’ll need a copy of your project file as well as a copy of the posts folder from your server to troubleshoot further.

Create a ZIP file containing your project file and the posts folder from your server. The project file is the file you open in RapidWeaver to edit your site. After creating the ZIP file, upload it using a service like Dropbox, WeTransfer, Droplr, or a similar service to create download link for us. Paste that download link in your reply.