Exception.format_banner
You're seeing just the function
format_banner
, go back to Exception module for more information.
Specs
format_banner(kind(), any(), stacktrace()) :: String.t()
Normalizes and formats any throw/error/exit.
The message is formatted and displayed in the same format as used by Elixir's CLI.
The third argument is the stacktrace which is used to enrich a normalized error with more information. It is only used when the kind is an error.