Omg I think I fixed it. So on mobile go to settings. Under App settings camera and it shows front and back but neither was selected. I selected back and bam stated working... I have not scaned a barcode yet but at least it opened it with out the error...
you sir a genius!!!!!!!
Thanks everyone. Just swapped phones and also had this surprise that never happened previously. So thank you thank you thank you for solving this and sharing it in the post.
Flippin Huawei, its been annoying enough trying to get notifications coming through when im not using the phone. Phew, I think I'm fully up and running now.