[Answered ]-How to resolve the error "an error occured: no such file or directory for a Django/Python3 app"

If you type eb logs into the command line and look for the eb-engine.log section you might be able to get more details.

Also maybe verify that you set up you eb cli correctly. Here is the link to setting it up, look at section 2.3 and make sure you have all the requirements installed appropriately.

https://github.com/aws/aws-elastic-beanstalk-cli-setup

Finally double check your python version(s) you have installed. the tutorial is calling python-3.6 but you may not have that version installed.