Retrieve and send a PostgreSQL bytea image

I have an app which uses AWS Lambda functions to store images in a AWS PostgreSQL RDS as bytea file types.

The app is written in javascript and allows users to upload an image (typically small).

<input
  className={style.buttonInputImage}
  id="logo-file-upload"
  type="file"
  name="myLogo"
  accept="image/*"
  onChange={onLogoChange}
/>

Currently I am not concerned about what format the images are in, although if it makes storage and retrieval easier I could add restrictions.

I am using python to query my database and post and retrieve these files.

INSERT INTO images (logo, background_image, uuid) VALUES ('{0}','{1}','{2}') ON CONFLICT (uuid) DO UPDATE SET logo='{0}', background_image='{1}';".format(data['logo'], data['background_image'], data['id']);

and when I want to retrieve the images:

"SELECT logo, background_image FROM clients AS c JOIN images AS i ON c.id = i.uuid WHERE c.id = '{0}';".format(id);

I try to return this data to the frontend:

    return {
        'statusCode': 200,
        'body': json.dumps(response_list),
         'headers': {
            "Access-Control-Allow-Origin" : "*"
         },
    }

I get the following error: Object of type memoryview is not JSON serializable.

So I have a two part question. First, the images are files being uploaded by a customer (typically they are logos or background images). Does it make sense to store these in my database as bytea files? Or is there a better way to store image uploads.

Second, how do I go about retrieving these files and converting them into a format usable by my front end.

from Retrieve and send a PostgreSQL bytea image