Traversing South Africa by road - Arniston to Hermanus

I have been having issues with Facebook refusing to share my story. This has never happened before and I thought it was the URL link but now I've made a new intro to the story and embedded the old URL in the text and it still seems to object but when I ask why it comes up with a Facebook internal error - see screenshots below 

I click on "Let us know" and I get the following response ...

Full story at https://www.marksadventures.co.uk/classic-blogs/traversing-south-africa-by-road-part-6