[BUG] Unable to interact after successful link connection, realtime mode

Description

Install according to the official tutorial
Enter the "voice-assistant-realtime" folder
Execute "task install"
Execute "task run"

The logs show that the voice interaction is working properly, but it doesn't actually respond on the page.

I checked the log history, and only this location showed an error.
[agora_ijcgf6] 2025-12-06T14:42:02.274676626+00:00 7818(7840) I key_point on_start@rtc_extension.cc:30 [agora_rtc_extension] config: {"agora_asr_full_config":"","agora_asr_hotwords":[],"agora_asr_language":"","agora_asr_session_control_file_path":"","agora_asr_shift_timestamp":false,"agora_asr_vendor_app_id":"","agora_asr_vendor_key":"","agora_asr_vendor_name":"","agora_asr_vendor_region":"","agora_asr_vendor_secret":"","agora_asr_vendor_uri":"","app_certificate":"519f****","app_id":"8254e7662b684723a263125822a49caf","area_code":-1,"audio_frame_send_delay_ms":100,"audio_scenario":0,"auto_join":true,"channel":"agora_ijcgf6","datastream_encryption_enabled":false,"enable_agora_asr":false,"enable_asr_log":false,"enable_string_uid":false,"encryption_key":"","encryption_mode":0,"encryption_salt":"","preload_asr_filters":[],"privilege_expire_seconds":86400,"publish_audio":true,"publish_audio_auto_publishing":true,"publish_data":true,"publish_video":false,"publish_video_auto_publishing":true,"publish_video_encoded":false,"publish_video_frame_rate":15,"publish_video_height":480,"publish_video_width":640,"remote_stream_id":149652,"remote_user_id":"","sdk_log_file_path":"","sdk_params":"","shift_audio_timestamp":false,"sid":"","stream_id":0,"subscribe_audio":true,"subscribe_audio_frame_source":"on_playback_before_mixing","subscribe_audio_num_of_channels":1,"subscribe_audio_sample_rate":16000,"subscribe_audio_samples_per_frame":0,"subscribe_remote_stream_ids":[149652],"subscribe_remote_user_ids":[],"subscribe_video":false,"subscribe_video_encoded":false,"subscribe_video_pix_fmt":0,"token":"007e****","token_expire_seconds":86400,"unsubscribe_remote_stream_ids":[],"unsubscribe_remote_user_ids":[],"use_frame_counted_audio_timestamp":false,"user_id":""}
[agora_ijcgf6] 2025-12-06T14:42:02.293558475+00:00 7818(7843) I ten:runtime ten_extension_handle_ten_namespace_properties@metadata.c:346 [v2v] ten section is not found in the property, skip
[agora_ijcgf6] 2025-12-06T14:42:02.299795067+00:00 7818(7843) W ten:runtime ten_metadata_flatten_manifest_api_definition@metadata.c:167 Failed to flatten manifest api definition: Failed to read content file from /app/agents/ten_packages/system/ten_ai_base/api/mllm-interface.json
[agora_ijcgf6] 2025-12-06T14:42:02.299829895+00:00 7818(7843) E ten:runtime ten_metadata_init_schema_store@metadata.c:209 Failed to flatten manifest api definition. base_dir: /app/agents/ten_packages/extension/openai_mllm_python, app_base_dir: /app/agents/examples/voice-assistant-realtime/tenapp

Environment

docker cpu

Steps to reproduce

Install according to the official tutorial, then start task run.

Expected behavior

Normal voice interaction

Severity

Critical

Additional Information

No response

Reproduce the issue in examples/voice-assistant-realtime with task install and task run, then inspect the reported locations in rtc_extension.cc:30 and metadata.c:167-209. Check the missing ten_ai_base/api/mllm-interface.json content under the openai_mllm_python package and verify that the page responds normally after the metadata error is resolved.