Unable to use RNFS to read a file despite providing an existing path

I'm trying to follow the 'Usage' example in this repo: https://github.com/rhdeck/react-native-coreml

And for reference to RNFS:https://github.com/itinance/react-native-fs

So my code is fairly similar:

import {compileModel, classifyTopValue} from 'react-native-coreml';const NetworkMLModelPath ='https://github.com/hollance/MobileNet-CoreML/raw/master/MobileNet.mlmodel';const coreml = async (pathToImage: string) => {  try {    const {jobId, promise} = RNFS.downloadFile({      fromUrl: NetworkMLModelPath,      toFile: `${RNFS.DocumentDirectoryPath}MobileNetV2.mlmodel`,    });    await promise;    console.log('jobId', jobId);    const [{name, path, isFile, isDirectory}] = await RNFS.readDir(      `${RNFS.DocumentDirectoryPath}`,    );    console.log('name', name, 'path', path, isFile(), isDirectory());    const modelPath = await compileModel(path);    // const {label, confidence} = await classifyTopValue(pathToImage, modelPath);    // console.log('The image is a '+ label +'. I think. ');  } catch (error) {    console.log(error);  }};

And my output is

 LOG  jobId 1 LOG  name MobileNetV2.mlmodel path /var/mobile/Containers/Data/Application/4A549020-958B-4B83-99EE-782E4DAAEA9C/Documents/MobileNetV2.mlmodel true false ERROR  TypeError: null is not an object (evaluating 'RNCoreML.mainBundlePath') LOG  [TypeError: undefined is not an object (evaluating '_$$_REQUIRE(_dependencyMap[6], "react-native-coreml").compileModel')]

So my RNFS.downloadFile() seems to have worked since I have a jobId, but I don't have a path to my file since my file "doesn't exist". Any help or suggestions would be appreciated!

UPDATE 1I read the docs further and the Promise returned by RNFS.downloadFile(); has a member called statusCode. I used that and saw my download is statusCode 200. So I then manually downloaded the model to see if the file is correct. I tested the model and it is indeed functional. RNFS.readDir() returns true for isFile, and false for isDirectory. So I think my file is downloaded properly. I need help figuring out why compileModel(path) is returning an error or how to make it run smoothly.

UPDATE 2I've simplified the code to the following:

import {compileModel, classifyTopValue} from 'react-native-coreml';const NetworkMLModelPath ='https://github.com/hollance/MobileNet-CoreML/raw/master/MobileNet.mlmodel';const coreml = async (pathToImage: string) => {  const path = 'MobileNetV2.mlmodel';  try {    const {promise} = await RNFS.downloadFile({      fromUrl: NetworkMLModelPath,      toFile: RNFS.MainBundlePath + path,    });    console.log('promise', (await promise).statusCode);    const modelPath = await compileModel(path);    // const {label, confidence} = await classifyTopValue(pathToImage, modelPath);    // console.log('The image is a '+ label +'. I think. ');  } catch (error) {    console.log(error);  }};

output:

 LOG  promise 200 LOG  [TypeError: undefined is not an object (evaluating '_$$_REQUIRE(_dependencyMap[5], "react-native-coreml").compileModel')]

UPDATE 3

I added in the following:

const exists = await RNFS.exists(`${RNFS.MainBundlePath}/MobileNetV2.mlmodelc`);console.log('exists', exists);

and it returned true. But compileModel() still doesn't work.