Try the following:
- 
Edit the app.yml and change "templates/postgres.10.template.yml"to"templates/postgres.template.yml".
- 
Issue a stop: ./launcher stop app
- 
Try a rebuild ./launcher rebuild app
Try the following:
Edit the app.yml and change "templates/postgres.10.template.yml" to "templates/postgres.template.yml" .
Issue a stop: ./launcher stop app
Try a rebuild ./launcher rebuild app