Sorry - please ignore first photo - showing my incompetence again!

I think it may be a fungal disease unfortunately as some leaves have round spots with a darker centre which is typical of fungal infection.

not sure which one though. see what others suggest.

It looks to me like anthracnose, to me.

Oh dear. Thank you both, but sounds like sad news 😕.

I like your paintings, especially the tree one. Hope your shrub is saveable with a fungicidal spray.

Thank you Feverfew!