fatal method
Logs a message at the FATAL
level.
Used when a critical error occurs and the system may not recover.
Example:
log.fatal('Unrecoverable system failure.', error: err, stacktrace: st);
Implementation
void fatal(String message, {Object? error, StackTrace? stacktrace}) {
add(LogLevel.FATAL, message, error: error, stacktrace: stacktrace);
}