Why does this query not work?

Here's my URL:

http://localhost:3000/companies/activities/5e8492c99c41674ce023f7f3

Here's my route:

router.get('/companies/activities/:activityId', async(req, res)=> {
      try {
            //console.log(req.params.activityId);
            let activityId=req.params.activityId;
        await Activity.getOne(activityId);
        res.send(Company.success());
    } catch (err) {
        res.send(Proposal.error('An unexpected error was encountered while trying to load your proposal. Please try again.'));
    }
});

Here's my service:

const { ObjectId } = require('mongodb');
const { Util } = require('node-utils');
const moment = require('moment-timezone');
const Service = require('./service');

const mongoose = require('mongoose');
const ProposalSchema = require('../schemas/ProposalSchema');
const CompanySchema = require('../schemas/CompanySchema');
const UserSchema = require('../schemas/UserSchema');
const ActivitySchema = require('../schemas/ActivitySchema');

class Activity extends Service {

    constructor() {
        super();

        this.collection = 'activities';
        this.plural = 'activities';
        this.singular = 'activity';
        this.model = mongoose.model('Activity', ActivitySchema);        
        //this.fields = require('../lib/model-proposal');
    }   
	
	   getOne(activityId) {
		   //console.log(activityId);
        return new Promise((resolve, reject) => {
            let activity_Id = this._getId(activityId);
			console.log(activity_Id);
            this.model.findOne({ _id: activity_Id }, (err, res) => {
                if (err) { console.log(err); reject(err); }
                resolve(res);
            });
        });
    }
}

module.exports = new Activity();

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The _getId method is in the "service.js" service and that's this guy:


    _getId(id) {
        try {
            if (typeof id == 'object') {// && id instanceof ObjectID) {
                return id;
            } else if (typeof id == 'string') {
                return new ObjectID(id);
            } else {
                return false;
            }
        } catch (err) {
            console.log('Error: ', err);
            return false;
        }
    }

In my collection, I have this:


The table seems to be set, yet I'm getting this error:

{"error":false,"msg":""}

So, my "getOne" query is failing, but I don't know why.

Do you see anything that I'm doing wrong? How do I go about troubleshooting this thing?

Thanks!

I've been able to console out my id as well as all of the obvious elements...