Customers not able to register in magento 2.3.1 with error as “The customer email is missing. Enter and try again”

I am using magento 2.3.1 and i am trying to register customer from frontend and i am getting following error “The customer email is missing. Enter and try again.“

when i try to check in _beforeSave() from MagentoCustomerModelResourceModelCustomer doesnt getting email id. I am getting following error when I print the customer object

Array
(
    [created_in] => The XXXXXX XXXXX Store
    [email] => 
    [firstname] => pradeep
    [lastname] => sanku
    [store_id] => 1
    [website_id] => 1
    [addresses] => Array
        (
        )

    [entity_id] => 
    [password_hash] => c230dfa79aedee32b5d1d4645977a806be7bb4bfd0689c120930bdb1a45c2e6e:w4cmFyPTPkTsTYTlH0vSOMQIjNzW3kFJ:1
    [parent_id] => 0
)

Note:- I had debugged more and landed at MagentoCustomerModelAccountManagement.php :: public function createAccount(CustomerInterface $customer, $password = null, $redirectUrl = '')

in this function $customerEmail = $customer->getEmail(); this variable is coming empty.