Striceis a company based in Italy, and we use the fattura24 online service to perform invoicing. Back home, electronic invoicing is mandatory, and it's better to rely on an external service to correctly perform these duties.
Run it with bin/console: there's some code there already initializing the library, and it tries to do it by reading the API_KEY environment variable. If you want to speed up your work and forget about typing it, simply create a .env file with the key on the root folder.
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