NetlifyCMS Unable to select multiple images using Uploadcare "image" widget - netlify-cms

Question

Here is the relevant portion of my config.yml for NetlifyCMS where I want to use Uploadcare's image widget to select multiple images for a gallery:
media_library:
name: uploadcare
config:
publickey: mypublicapikey
media_folder: "/src/images/"
public_folder: "/src/images/"
collections:
- label: "Projects"
name: "projects"
folder: "src/data/projects"
media_folder: 'images'
media_library:
name: uploadcare
config:
publickey: mypublicapikey
fields: # The fields for each document, usually in front matter
- {label: "Image", name: "image", widget: "image", allow_multiple: false}
- label: "Gallery Images"
name: "images"
widget: "image"
options:
media_library:
config:
multiple: true
previewStep: false
This results in a widget where I can only select one image. I have tried shift/ctrl/ctrl+shift clicking additional entries but it doesn't work. The docs say allowing for multiple images is the default, but this is not the behavior I am experiencing.

Answer 1

To get Uploadcare working, you may need to install the uploadcare plugin for netlify-cms:
npm i netlify-cms-media-library-uploadcare --save
I followed the solution posted here, to break it down:
Create a cms folder in src
Add a cms.js file to the src/cms folder
Add this code:
import CMS from 'netlify-cms-app'
import uploadcare from 'netlify-cms-media-library-uploadcare';
CMS.registerMediaLibrary(uploadcare);
Then follow the docs for Uploadcare.