Error object. In
addition to a message string and stack trace, it contains a string code.
Error codes are strings using the following format:
Some examples include
While the message for a given error can change, the code will remain the same between backward-compatible versions of the Firebase SDK.
An explanatory message for the error that just occurred.
This message is designed to be helpful to you, the developer. Because it generally does not convey meaningful information to end users, this message should not be displayed in your application.
The name of the class of errors, which is