Can't insert even static size array into creation mutation into AWS GraphQL API in React Native - react-native

Question

I have the the following schema in my schema.graphql folder (please note the relationship keywords):
type Blog #model {
id: ID!
name: String!
description: String
post: [Post] #hasMany
userId: String
username: String
}
type Post #model {
id: ID! #primaryKey
isPrivate: Boolean!
title: String!
description: String
comments: [Comment] #hasMany
userId: String
username: String
}
type Comment #model {
id: ID! #primaryKey
content: String
likes: [Like] #hasMany
userId: String
username: String
}
type Like #model {
id: ID! #primaryKey
isLiked: Boolean!
}
I'm performing creation, deletion and update mutations but somehow I cannot get them to work when I try to insert an array, be its size static or dynamic.
I'll give you an example:
THIS WORKS:
const postCreation = async () => {
try {
const user = await Auth.currentAuthenticatedUser();
const newPost = await API.graphql(
graphqlOperation(createPost, {
input: {
isPrivate: false,
title: "postTitle",
description: "postDescription",
userId: user.attributes.sub,
username: user.username,
},
}),
);
console.log(newPost);
}
catch(e) {
console.log(e.message);
}
}
But this DOES NOT:
const postCreation = async () => {
try {
const user = await Auth.currentAuthenticatedUser();
const newPost = await API.graphql(
graphqlOperation(createPost, {
input: {
isPrivate: false,
title: "postTitle",
description: "postDescription",
comments: [
{
content: "content1",
},
{
content:: "content2",
}
],
userId: user.attributes.sub,
username: user.username,
},
}),
);
console.log(newPost);
} catch(e){
console.log(e.message);
}
}
All I get from the catch block is "undefined"
What's the proper way of doing this?