Magento 2 How to disable Postal/Zip code validation from admin while edit customer?

Question

I am facing a strange issue while adding Customer, I had filled all the fields in the customer form including Zipcode but still, I am getting error

"Zip/Postal Code" is a required value.

In my form all fields are field. I tried to remove this error by making postal code field optional from Magento configuration:

Store -> General -> Zip/Postal Code is Optional for

but no luck.

Please help me!

Answer 1

Some vendor class or module has been changed, Run this command:

composer update

then run:

php bin/magento setup:upgrade
php bin/magento setup:di:compile
php bin/magento cache:flush

Answer 2

Try to remove cache:

   php bin/magento cache:clean