For user errors, you should make the messages descriptive and actionable. For example "Please enter at least 5 quantities". For system/app errors that is more

For user errors, you should make the messages descriptive and actionable. For example "Please enter at least 5 quantities". For system/app errors that is more of a crash, users shouldn't really need to know the details as they cannot do anything with it anyway. So a gentle "Something went wrong" is good. Remember that most applications may show a generic error to the user but they log the exceptions/real errors in backend using tools like Sentry etc. Keep it simple.