Magento 2.3.4 issue "We can't save the customer"

Question

I have migrated from 1.9.1 to 2.3.4. There is an issue while creating a customer account.

It says "We can't save the customer" as shown below screenshot. However, While checking on the database, an entry was there on the customer table.

Please, help to fix this issue.

Thank you

Mohit Kumar Arora · Accepted Answer · 2021-10-05 05:24:22Z

Solution to Debug #1:

Remove all files under [Document_Root]/var/log directory.
Retry customer registration.
Check for the problems in the files under [Document_Root]/var/log directory.

Solution to Debug #2:

In Magento\Customer\Controller\Account\CreatePost::execute() method, change the line:

$this->messageManager->addException($e, __('We can\'t save the customer.'));

to:

$this->messageManager->addException($e, $e->getMessage());

It will show the actual reason why the customer is not being saved.

Hope this helps.

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