StephenMax

Did the fix adjusting the AMP file as suggested. Those pages now work. Found one unrelated error which I was also able to correct.

Majority of the posts are now working ok. Still have 174 posts which I need to check what the errors are. But does look manageable now.

I bear in mind your suggestion on changing the setting to php.

Well done, Thanks.

I have re-checked the PHP 7 situation. WordPress itself was declared fully compatible with PHP 7 at it’s official release in Nov 2015.

With a code check only the theme appears only to have two minor errors and one plugin, WP Super Cache, three errors. Both seem, on a run time and community view, in practice work ok.

Checking for conflicts between plugins is the next on the list. However a random error is going to be difficult to check for…

Good luck to Chris / neotrope on your move to PHP 7. As you say this will also enable support for http/2 which has additional speed advantages.

Hi Chris / neotrope

Thanks for your comments. The site is actually NOT on a shared IP.

The wp-config file I did check out. It actually has the code
define(‘WP_SITEURL’, SP_REQUEST_URL);
define(‘WP_HOME’, SP_REQUEST_URL);

and is being reported correctly on the WP setting (although greyed out).

Currently I have Sitemap disabled in Yoast SEO and a separate Sitemap plugin being used which works perfectly… Does make one concerned about the Yoast plugin.