Can't upload image using react-native, GraphQL and urql - react-native

Question

So I'm trying to send an image to our server with react native using GraphQL query and I don't know why but it always return an error : [CombinedError: [Network] Network request failed].
The query :
import { graphql } from '../../gql';
import { gql, useMutation } from 'urql';
const AddProfilePicture_Mutation = graphql(`
mutation AddPicture_Mutation ($userId: ID!, $picture: Upload!) {
uploadProfilePicture(input: {
userId: $userId
picture: $picture
}) {
id
}
}`);
export const useAddProfilePicture = () => {
const [{fetching, error}, execute] = useMutation(AddProfilePicture_Mutation);
return {
error: !!error,
fetching,
addProfilePicture: execute,
}
}
and the code :
const pictureHandler = async () => {
const options = {
mediaType: 'photo' as MediaType,
includeBase64: true,
selectionLimit: 1,
};
const profilePicture = await launchImageLibrary(options);
if (profilePicture.assets?.[0].fileSize && profilePicture.assets?.[0].fileSize > MAXFILESIZE) {
showError(t('profileScreen.PictureSize'));
}
if (profilePicture.assets?.[0].uri && profilePicture.assets[0].fileName && profilePicture.assets[0].type) {
// const myBlob = await fetch(profilePicture.assets[0].uri).then(r => r.blob());
const blob = new Blob([profilePicture.assets[0].base64 as BlobPart], {
type: profilePicture.assets[0].type,
});
const file = new File([blob], profilePicture.assets[0].fileName, { type: `${profilePicture.assets[0].type}`});
const {error} = await addProfilePicture(
{ userId: userId!, picture: file},
{ fetchOptions: { headers: { 'graphql-require-preflight': '' } } }
);
if (!error) {
showSuccess(t('profileScreen.PictureSuccessAdded'));
navigation.navigate('UserProfile');
} else {
console.log(error);
showError(t('profileScreen.PictureErrorAdded'));
}
};
};
I've been trying everything I found on the web, Formdata, react-native-blob-util and rn-fetch-blob. If I try sending anything else then a File, the server reject it and says for exemple:
Variable 'picture' has an invalid value: Expected type org.springframework.web.multipart.MultipartFile but was java.util.LinkedHashMap]
Update :
After long research and help from other programmers. We never did found the answer. We open a new access point in the backend specifically for the uploaded picture and used a regular fetch post.