fix: add missing transcription callbacks to TavusVideoService

CHANGELOG.md

@@ -9,6 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- Fixed an issue with the `TavusVideoService` where an error was thrown due to
+  missing transcription callbacks.
+
 - Fixed an issue in `LiveKitTransport` where empty `AudioRawFrame`s were pushed
   down the pipeline. This resulted in warnings by the STT processor.
 

src/pipecat/transports/services/tavus.py

@@ -242,6 +242,10 @@ class TavusTransportClient:
                 on_transcription_message=partial(
                     self._on_handle_callback, "on_transcription_message"
                 ),
+                on_transcription_stopped=partial(
+                    self._on_handle_callback, "on_transcription_stopped"
+                ),
+                on_transcription_error=partial(self._on_handle_callback, "on_transcription_error"),
                 on_recording_started=partial(self._on_handle_callback, "on_recording_started"),
                 on_recording_stopped=partial(self._on_handle_callback, "on_recording_stopped"),
                 on_recording_error=partial(self._on_handle_callback, "on_recording_error"),