I am installing an extension I have written and published to the Magento Marketplace, but I get an error when installing from the store that makes no sense.

Check Component Dependency

We found conflicting component dependencies. Hide detail

Command “update” failed: Loading composer repositories with package information Updating dependencies (including require-dev) Your requirements could not be resolved to an installable set of packages.

Problem 1 – The requested package magento/product-community-edition could not be found in any version, there may be a typo in the package name. Problem 2 – Installation request for oddware/shipsterconnect 100.1.36 -> satisfiable by oddware/shipsterconnect[100.1.36]. – oddware/shipsterconnect 100.1.36 requires magento/module-sales 100.1.* -> no matching package found.

Potential causes: – A typo in the package name – The package is not available in a stable-enough version according to your minimum-stability setting see https://getcomposer.org/doc/04-schema.md#minimum-stability for more details.

Read https://getcomposer.org/doc/articles/troubleshooting.md for further common problems.

For additional assistance, see component dependency help .

I don’t understand what the error about the community module is at all, it makes no sense and is not in my composer.json. And the module-sales makes even less sense, as that module is installed;

“magento/module-sales Magento_Sales 100.1.8”

And this is the composer.json in my extension;

{   "name": "oddware/shipsterconnect",   "description": "Oddware module for connecting with Shipster",   "require": {     "php": "~5.6.5|7.0.2|7.0.4|~7.0.6",     "magento/module-sales": "100.1.*",     "magento/module-backend": "100.1.*"   },   "type": "magento2-module",   "version": "100.1.1",   "license": [     "OSL-3.0",     "AFL-3.0"   ],   "autoload": {     "files": [       "registration.php"     ],     "psr-4": {       "OddWare\ShipsterConnect\": ""     }   } }