How to diagnose the «Something went wrong while saving the customer» failure?

dmitrii_fediuk · April 13, 2016, 5:21am

The «Something went wrong while saving the customer» message is generated here:

magento/magento2/blob/052e789/app/code/Magento/Customer/Controller/Adminhtml/Index/Save.php#L285-L289


} catch (\Exception $exception) {
    $this->messageManager->addException($exception, __('Something went wrong while saving the customer.'));
    $this->_getSession()->setCustomerFormData($originalRequestData);
    $returnToEdit = true;
}

As you can see, an actual exception is not logged.
You should log it here or set a breakpont.