Hi Trisha,
depending their set log level, the logs are stored for your node environments but not for free applications.
There is a module in the app store which could be used to extend that log and make it visible within your application itself
https://appstore.home.mendix.com/link/app/113006/
further reading:
https://docs.mendix.com/refguide/logging
https://docs.mendix.com/howto/monitoring-troubleshooting/log-levels