Aws::Errors::MissingCredentialsError:unable to sign request without credentials set
<p>I am building a rails application and I am using dynamoDB as the database (using dynamoid). 
While I am running the tests, I get the following error:</p>

<p><code>Aws::Errors::MissingCredentialsError:unable to sign request without credentials set</code></p>

<p>Since tests are run in the local dynamoDB, I am a little confused over this error message. Is it that my tests are not running in local db and they are trying to access the remote db?</p>