I have checked your child theme and see that you copied whole the woocommerce folder. Did you make changes in all the files in that folder?
Please, check the files and leave only files that you really changed because after update to 5.0 you’ll have a lot of conflicts and we can’t check and compare every file of your child theme with the default one. Delete files that you did not change from the child theme and reply back to proceed with the update.
