Tailgate on RSV wont open with key remote & I can’t find a manual button anywhere. Any ideas folks ?Its 2018 model.

[Turtle Dove]

Hi all
I hope you can help.
RSV tailgate wont open with key remote ( remote works for everything else)
Warning light on dash says boot open.
Tailgate Holden badge button doesn’t work.
Anyone know how to fix ?
Thanks