Magento 2: [SOLUTION] Order confirmation email contains no FROM or FROM EMAIL address

Confirmation emails have no FROM or FROM email address 2.2.4

Going to : /vendor/magento/module-sales/Model/Order/Email/SenderBuilder.php

 Edit function configureEmailTemplate() and add this line
 $this->transportBuilder->setFrom($this->identityContainer->getEmailIdentity());
 to show like below:

 protected function configureEmailTemplate()
 {
$this->transportBuilder->setTemplateIdentifier($this->templateContainer->getTemplateId());
$this->transportBuilder->setTemplateOptions($this->templateContainer->getTemplateOptions());
$this->transportBuilder->setTemplateVars($this->templateContainer->getTemplateVars());
$this->transportBuilder->setFrom($this->identityContainer->getEmailIdentity()); //the below are commented
//$this->transportBuilderByStore->setFromByStore(
// $this->identityContainer->getEmailIdentity(),
// $this->identityContainer->getStore()->getId()
// );
 }

Its a simple fix and its work perfectly.