logging could be improved for incorrectly typed config files, #220
Description
Currently, when you've typed something wrong, for example, creator_email_addresses = [email@example.com] rather than ["email@example.com"]
the app will fail to find the config file and report it as missing like so.
gathio-app | Configuration file not found! Have you renamed './config/config-example.toml' to './config/config.toml'?
The ideal response would show that the config file exists, but is misconfigured and would also show what line/collumn like a linter/compiler would.