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In my opinion, according to what ta described in the error, he did not find the file android, try
start the command in the folder where your files are. For more information about the error run the message written there: --verbose. Another thing is that to mess with the Ionic you have to have the nodejs https://nodejs.org/en/ , (I don’t know if always more at least when I last needed). For more information on Ionic use your website: https://ionicframework.com/getting-started#cli

From what I saw, you did not declare the environment variables of ANDROID, which has nothing to do with Ionic, but with the process of compiling Android.
– Gesiel Rosa