Broken Child Products & Errors after upgrade from VM3 to VM4.0.7

[SAWebCo]

(VM 4.0.7.10744, Joomla 3.10.11)

Hey guys,

Got a major problem...

So the update from VM3 to VM to 4.0.7 has broken my Child Products.

E.G. If you go to https://www.safari2x.cornerstonemedia.co.za/shop (the category view) and click on an alternative colour for a product with children e.g. 'NOWA TECH DECKING PLANK - RIVERENE', a modal box pops up stating 'Error Updating Page' and nothing changes (as it used to, title and image changed).


Also if you go to the actual product page: https://www.safari2x.cornerstonemedia.co.za/shop/nowa-tech-decking-plank-150x25x4000mm-riverene-detail

and click on an alternative colour, the URL changes but the image, title and description don't.


Nightmare - so what now?

Any ideas?

Please help before the client roasts me.

Thanks in advance.


(using: com_virtuemart.4.0.7.10744
com_virtuemart.4.0.7.10744_ext_aio
vmadmin_4.0.7.10744
vmbeez3_3.4.2)