Transcoder.register() takes instance of custom transcoding, not Class
@@ -623,7 +623,7 @@ method once for each of your custom transcodings.
class MyApplication(Application):
def register_transcodings(self, transcoder: Transcoder):
super().register_transcodings(transcoder)
- transcoder.register(DateAsISO)
+ transcoder.register(DateAsISO())
class DateAsISO(Transcoding):
