compose: Failed to execute script docker-compose when doing docker-compose up on SSH context

Description of the issue

Saw this post detailing how to use contexts with the upcoming docker-compose 1.26.0-rc3 release and tried to give it a shot. I then installed that pre-release version on both my local machine which has the application source code and the new EC2 machine that I want to deploy to and created a context called rolocha-staging which connects to the docker engine in the EC2 instance. Then I tried to deploy my docker-compose app to it using either

docker context use rolocha-staging
docker-compose --env-file .env.staging -f docker-compose.yml -f docker-compose.staging.yml up -d

or

docker-compose --context rolocha-staging --env-file .env.staging -f docker-compose.yml -f docker-compose.staging.yml up -d

but both approaches are resulting in the error/stacktrace included below.

If I execute in the default context (i.e. use --context default argument or docker context use default command), everything works smoothly.

Context information (for bug reports)

Output of docker-compose version

docker-compose version 1.26.0-rc3, build 46118bc5

Output of docker version

Docker version 19.03.8, build afacb8b

Output of docker-compose config (Make sure to add the relevant -f and other flags)

networks:
  app-network:
    driver: bridge
services:
  client:
    build:
      context: /Users/bibek/Developer/RoloCha/client
    command: npx serve -s build -l 4000
    container_name: rolocha-client
    environment:
      APP_CLIENT_PORT: '4000'
      APP_SERVER_PORT: '3000'
      MONGO_DB_NAME: rolocha-dev
      MONGO_HOSTNAME: db
      MONGO_PASSWORD: [redacted]
      MONGO_PORT: '27017'
      MONGO_USERNAME: admin
      NODE_ENV: development
    expose:
    - '4000'
    image: roloch4/client-staging:latest
    networks:
      app-network: {}
    ports:
    - 4000:4000/tcp
    restart: always
  db:
    container_name: db
    environment:
      APP_CLIENT_PORT: '4000'
      APP_SERVER_PORT: '3000'
      MONGO_DB_NAME: rolocha-dev
      MONGO_HOSTNAME: db
      MONGO_INITDB_ROOT_PASSWORD: ''
      MONGO_INITDB_ROOT_USERNAME: ''
      MONGO_PASSWORD: [redacted]
      MONGO_PORT: '27017'
      MONGO_USERNAME: admin
      NODE_ENV: development
    image: mongo
    networks:
      app-network: {}
    ports:
    - 27017:27017/tcp
    volumes:
    - dbdata:/data/db:rw
  nginx:
    container_name: nginx
    image: nginx:latest
    networks:
      app-network: {}
    ports:
    - 80:80/tcp
    - 443:443/tcp
    restart: always
    volumes:
    - /Users/bibek/Developer/RoloCha/nginx-conf/nginx.conf:/etc/nginx/nginx.conf:rw
  server:
    build:
      context: /Users/bibek/Developer/RoloCha/server
    command: yarn start
    container_name: rolocha-server
    environment:
      APP_CLIENT_PORT: '4000'
      APP_SERVER_PORT: '3000'
      MONGO_DB_NAME: rolocha-dev
      MONGO_HOSTNAME: db
      MONGO_PASSWORD: [redacted]
      MONGO_PORT: '27017'
      MONGO_USERNAME: admin
      NODE_ENV: development
    expose:
    - '3000'
    image: roloch4/server-staging:latest
    networks:
      app-network: {}
    ports:
    - 3000:3000/tcp
    restart: always
version: '3.0'
volumes:
  dbdata: {}
  node_modules_c: {}
  node_modules_s: {}

Steps to reproduce the issue

1. Create a remote context connecting to an EC2 instance via SSH using docker context create
2. Switch to that context using docker context use <context-name>
3. Try to deploy the local docker-compose app to the remote context using docker-compose up

Observed result

Error message above

Expected result

No error message, starts up the docker-compose services in remote machine

Stacktrace / full error message

Traceback (most recent call last):
  File "docker-compose", line 6, in <module>
  File "compose/cli/main.py", line 72, in main
  File "compose/cli/main.py", line 125, in perform_command
  File "compose/cli/command.py", line 54, in project_from_options
  File "compose/cli/docker_client.py", line 41, in load_context
  File "site-packages/docker/context/api.py", line 97, in get_context
  File "site-packages/docker/context/context.py", line 61, in load_context
  File "site-packages/docker/context/context.py", line 87, in _load_meta
KeyError: 'StackOrchestrator'
[92007] Failed to execute script docker-compose
make: *** [stageup] Error 255

Additional information

Running macOS Catalina 10.15.4

Installed docker-compose v1.2.6-rc3 on both local machine and EC2 instance using

curl -L https://github.com/docker/compose/releases/download/1.26.0-rc3/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose