Product Category selection box for selection not displaying

[Alkhamsa]

Joomla V3.10
VirtueMart 4.0.6 10690
PHP version: 7.4.33

I am unable to either modify a category for a product or enter a new product and select a category. Please see the attachment.

[GJC Web Design]

the category select is fetched by ajax ...  I would suggest you have an error which is corrupting the return ..
Check your console for the call and return

[Alkhamsa]

 The data is being returned by Ajax and there is no error but the  status isn't being set to display it.  What would cause that?