Using -f txt when exporting (MacOS, CLI with Mono) causes the program to return the error:
Can't convert value [txt] to type [DiscordChatExporter.Core.Models.ExportFormat].
The error also occurs with -f "txt". The command was structured perfectly, and worked when the -f argument was removed.
You should specify -f PlainText instead
Probably should change the documentation then. https://github.com/Tyrrrz/DiscordChatExporter/wiki/GUI%2C-CLI-and-Formats-explained#changing-the-format uses -f txt
Updated