Magento data migration error: Undefined index: dest

Question

When I run the migrate:data command I get the following error:

Notice: Undefined index: dest in /var/www/html/magetno/vendor/magento/data-migration-tool/src
/Migration/Step/Eav/InitialData.php on line 161

Checked the given file and the error comes from the following method:

public function getAttributes($type)
{
    return $this->attributes[$type];
}

I also checked the database of magento 1 site and there is no attribute with code 'dest'

Edit:

Checked on further and found its coming from data-migration-tool/src/Migration/Step/Eav/Data.php line 421

$destinationRecords = $this->initialData->getAttributes('dest');

Answer 1

Check that your destination EAV tables have data in. I ran into this issue when attempting to migrate to a schema with no initial data in.

If you look at vendor/magento/data-migration-tool/src/Migration/Step/Eav/InitialData.php on line 108, when initialising the attributes the 'dest' index will not be set if you have no attributes in your EAV table.

        foreach ($destinationRecords as $id => $record) {
            $this->attributes['dest'][$id] = $record;
        }

A simple fix is to ensure you've run the Magento 2 install for your site before running the migration, which will add the base attributes for you.