This module lets customers add comments to their orders, which then are saved in the database

Add require and repositories sections to your composer.json as shown in example below and run composer update.

composer.json example

{
    ...
    
    "repositories": [
        {"type": "git", "url": "https://github.com/kirchbergerknorr/Kirchbergerknorr_CommentCart"},
    ],
    
    "require": {
        "kirchbergerknorr/Kirchbergerknorr_CommentCart": "*"
    },
    
    ...
}

Please report new bugs or improvements. We will improve this module as soon as we face new issues or requirements.