What does that mean or refer to?

VECTOR_QUERY_ERROR: Status + 404

VECTOR_QUERY_ERROR: Status + 404

//I defined a new object type for the metadata - MetadataSchema 
let newMetaData:MetadataSchema ={
    d1Key: keyValue,
    prjRef: projectRef,
    accRef: accountRef,
    parentRef:parentRef
}

//Stuff the object in there
const metaRecord:Record<string,VectorizeVectorMetadata>= { 
    "data": JSON.stringify(newMetaData)
};

//Add to the vector
let tempVec:VectorizeVector ={
    id:id,
    values: data[0], //the embeddings
    namespace:<The Namespace>,
    metadata:metaRecord
}

//I defined a new object type for the metadata - MetadataSchema 
let newMetaData:MetadataSchema ={
    d1Key: keyValue,
    prjRef: projectRef,
    accRef: accountRef,
    parentRef:parentRef
}

//Stuff the object in there
const metaRecord:Record<string,VectorizeVectorMetadata>= { 
    "data": JSON.stringify(newMetaData)
};

//Add to the vector
let tempVec:VectorizeVector ={
    id:id,
    values: data[0], //the embeddings
    namespace:<The Namespace>,
    metadata:metaRecord
}