I don't know what i do wrong, but when i tried to do checkout, there's an error and i can't finish the checkout. See the picture below for the detail.
Error on inspect element :
Error on service :
For these kinds of errors:
below are the few solutions which can help to resolve the problem.
1) Stores > Configuration > Customer > Customer Configuration > Name and Address Options: Number of Lines in a Street Address make it 2 please set it as 1
make sure both have correct value as per your current store id. this will resolve the problem.
Please take below link as reference. https://github.com/magento/magento2/issues/6929