React Native use frisbee get api not work

[YanYuanFE]

Thanks.

api.get('http://minisite.medtoday.com.cn/cycle/v-tipr-physician/getcolumnbycompanyid.php?company_id=1&parent_id=0').then(res => console.log(res.body)).catch(console.error);

res.boy is undefined, and res.json error。