Solr Dataimport nested entity from PostgreSQL - postgresql

Question

I wanna create nested entity with DataImportHandler.
I use Solr 8.6, Postgress 12, openjdk-11.
My config (schema.xml) looks like this:
<schema name="products" version="1.5">
<field name="_version_" type="long" indexed="true" stored="true"/>
<field name="_root_" type="int" indexed="true" stored="false"/>
<uniqueKey>id</uniqueKey>
<field name="id" type="int" indexed="true" stored="true" required="true" multiValued="false"/>
<field name="price" type="float" indexed="true" required="true" stored="true"/>
<field name="categories" type="int" indexed="false" stored="true" required="true" multiValued="true"/>
<field name="pictures" type="string" indexed="true" stored="true" multiValued="true"/>
<field name="pid" type="int" indexed="true" stored="true" />
<field name="previewUrl " type="string" indexed="true" stored="true" />
</schema>
data-config.xml
<dataConfig>
<dataSource type="JdbcDataSource"
driver="org.postgresql.Driver"
url="jdbc:postgresql://${db.host}/myDB"
user="user"
password="myPassword"
/>
<document>
<entity name="products"
pk="id"
transformer="DateFormatTransformer"
query="SELECT * from products"
deltaQuery="SELECT id FROM products WHERE updated > '${dataimporter.last_index_time}'::timestamp"
deltaImportQuery="SELECT * FROM products WHERE id=${dataimporter.delta.id}"
/>
<field column="id" name="id"/>
<field column="price" name="price"/>
<entity name="categories"
query="SELECT category_id FROM product_category WHERE product_id='${products.id}'">
<field column="category_id" name="categories"/>
</entity>
<entity name="pictures"
child="true"
pk="pid"
query="SELECT * FROM pictures WHERE product_id='${products.id}'"
>
<field column="id" name="pid"/>
<field column="preview_url" name="previewUrl"/>
</entity>
</entity>
</document>
</dataConfig>
This is the result I expect:
[
{
"id":1,
"price": 10,
"categories": [1, 2]
"pictures": [
{
"pid":1,
"previewUrl":"/url"
},
{
"pid":2,
"previewUrl":"/url"
},
]
"_version_":1674819829308063744
}
]
But I get the following error:
org.apache.solr.common.SolrException: [doc=null] missing required field: price
What am I doing wrong?