Hello,
I am trying an install on an ec2 ami and have most of the install done ok, however after upgrading the Gemfile.plugins
and then running RAILS_ENV=production bundle exec rake db:migrate I get the following error

rake aborted!
Psych::SyntaxError: (): did not find expected key while parsing a block mapping at line 1 column 1
.. openproject/lib/open_project/configuration.rb:147:in `load_config_from_file’

I have checked the database & config .yml’s for consistency and all looks fine.

Can someone give some advice of where to look for the error.

Thx
Art