Doesn't save new parent and related models

[equa2k9]

Hello, I have a little issue:
There are two models: User and UserInfo, relation one-to-one.
User:
public function getInfo() { return $this->hasOne(UserInfo::className(), ['user_id' => 'id']); }
Info:
public function getUser() { return $this->hasOne(User::className(), ['id' => 'user_id']); }

when I try to post data:
{ "username": "admin2", "email": "[email protected]", "phone": "+380666818275", "firstname": "Live23", "lastname": "fff23", "country_code": "UA", "role": "status": 10, "info": { "mail_country": "USA", "mail_address1": "Address1", "mail_address2": "Address 2", "mail_city": "City", "mail_state": "State", "mail_zip": "123456", "date_start": null, "date_end": null, "deposit_direct": 1, "text_info": "text info", "text_bullet": "text bullet", "text_short": "text short", "text_readmore": "text readmore", "photo": null, "g_ppm": null, "a_ppm": null } }
I have an error:
"name": "Relation exception", "message": "Owner-model admin\\models\\User not saved due to unknown error", "code": 0, "type": "notamedia\\relation\\RelationException", "file": "/home/oles/liveadvisor-api3/vendor/notamedia/yii2-relation/RelationBehavior.php", "line": 317,

But when I update user & userinfo (with user_id field), it's working well.
Can you help?