Getting failed loading params from .env vlucas/phpdotenv library required, but library is in

Question

When I try to run my PHP Codeception test environment through Docker in my project, I get the following error:

 docker-compose run --rm codecept run ui_automation 
 SignupCest --env staging --debug
 Starting qa-end-to-end-tests_db_1 ... done
 Creating qa-end-to-end-tests_codecept_run ... done

 ==== Redirecting to Composer-installed version in 
 vendor/codeception. You can skip this using --no- 
 redirect ====
 Command "run ui_automation" is not defined.

So, I run the same command with --no-redirect and I get this error:

In ParamsLoader.php line 51:
                                                            
Failed loading params from .env                                    
`vlucas/phpdotenv` library is required to parse .env 
files.        
Please install it via composer: composer require 
vlucas/phpdotenv  

So I run composer "require vlucas/phpdotenv" and get that it's already installed, which I believe is correct:

 ~/git/qa-end-to-end-tests $ composer require 
 vlucas/phpdotenv
 Using version ^5.2 for vlucas/phpdotenv
 ./composer.json has been updated
 Running composer update vlucas/phpdotenv
 Loading composer repositories with package information
 Updating dependencies
 Nothing to modify in lock file
 Installing dependencies from lock file (including 
 require-dev)
 Nothing to install, update or remove
 Package container-interop/container-interop is 
 abandoned, you should avoid using it. Use psr/container 
 instead.
 Generating autoload files
 45 packages you are using are looking for funding.
 Use the `composer fund` command to find out more!

I say it's already installed because this is what's in my composer.json:

{
"require-dev": {
    "codeception/robo-paracept": "^0.4.2",
    "codeception/codeception": "^4.1.9",
    "codeception/module-phpbrowser": "^1.0.0",
    "codeception/module-asserts": "^1.0.0",
    "codeception/module-webdriver": "^1.1",
    "phpunit/phpunit": "^9.4"
},
"require": {
    "ext-zip": "^1.15",
    "guzzlehttp/guzzle": "^7.2",
    "vlucas/phpdotenv": "^5.2"
},
"autoload": {
    "psr-4": {
        "Tests\\Support\\": "tests/_support",
        "UiAutomationTester\\": " 
"tests/_support/UiAutomation.php"
    }
}
}

And there's a vlucas/photoenv folder in my /vendor folder

My environment is as such:

php 7.4.12 
Mac OS Catalina 10.15.6
Composer 2.0.5
Codecept 4.1.11
Docker 19.03.13   
Docker compose 1.27.4,

This started happening when a dev uploaded a new .env file, but it is working on everyone's machine except mine. I have tried uninstalling and reinstalling docker and uninstalling and reinstalling composer. This is my first PHP work project, I'm not very familiar with PHP in general.

My docker yaml:

version: '3'
services:
codecept:
image: codeception/codeception
depends_on:
  selenium-hub:
    condition: service_healthy
  chrome:
    condition: service_healthy
  web:
    condition: service_started
volumes:
  - .:/project
web:
image: php:7-apache
depends_on:
  - db
volumes:
  - .:/var/www/html
db:
image: percona:5.6
selenium-hub:
image: selenium/hub
ports:
  - "4444:4444"
environment:
  GRID_MAX_SESSION: 1
  GRID_BROWSER_TIMEOUT: 3000
  GRID_TIMEOUT: 3000
healthcheck:
    test: ["CMD", "curl", "-f", 
"http://localhost:4444/grid/api/proxy"] 
    interval: 10s
    timeout: 10s
    retries: 6
    start_period: 10s
chrome:
image: selenium/node-chrome-debug
container_name: web-automation_chrome
depends_on:
  - selenium-hub
environment:
  HUB_PORT_4444_TCP_ADDR: selenium-hub
  HUB_PORT_4444_TCP_PORT: 4444
  NODE_MAX_SESSION: 1
  NODE_MAX_INSTANCES: 1
healthcheck:
  test: ["CMD", "curl", "-f", "http://localhost:5555"]
  interval: 10s
  timeout: 10s
  retries: 6
  start_period: 10s
volumes:
  - /dev/shm:/dev/shm
ports:
  - "5900:5900"
links:
  - selenium-hub