This error means the Web APIs were unable to be started by Elastic Beanstalk.
The Events tab shows any of the following messages:
- 
                     Instance deployment failed. For details, see 'eb-engine.log'.
- 
                     Command failed on instance. Return code: 1 Output: Engine execution has encountered an error..
- 
                     Unsuccessful command execution on instance id(s) 'i-0288efa6134ff723b'. Aborting the operation.
- 
                     Failed to deploy application.


