There are four log levels with error being the most severe.
- Debug
- Info
- Warn
- Error
The logging is controlled by the log_level configuration setting.
The default log level is :info.
You can disable all logs by setting this to :off.
For a newly-generated app, the shopify_app initializer will contain the log_level setting.
If you are upgrading from a previous version of the shopify_app gem then you will need to add this manually, otherwise it will default to :info.