title: EB CLI "eb create" ERROR: InvalidParameterValueError - Platform ARN is invalid
body: <p>I'm trying to create an Elastic Beanstalk node.js environment via the EB CLI. I've ran <code>eb init</code> in my code repo, and this doesn't give me any issues.</p>
  <p>Next, when I run <code>eb create</code> to create the environment, I receive the error <code>ERROR: InvalidParameterValueError - Platform ARN is invalid: Not an IAM ARN: 64bit Amazon Linux 2018.03 v4.15.2 running Node.js.</code></p>
  <p>I've searched for this error, it seems like I need to update the platform version, but I can't figure out how to do that.</p>
  <p>I also downgraded my node version from v12.18.4 to v12.18.3 because the EB docs didn't say that v12.18.4 was supported.</p>