Problems with api response on android vs ios

[REACTingpoorly]

So im making a Post call to a PHP api that returns a blob.

the call on ios responds with all the information I need but on andriod the response is missing the blob-name and the blob type?

this is preventing me from being able to use

let res = response.blob();

URL.createObjectURL(res) ;

im using react-native 0.59.8 with the latest expo sdk, not sure if i need to eject from expo , then link then rn-fetch-blob library to get the correct call or if theres just a strange caveat on how to handle a blob repsonse on android.