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```python -m voice_agent.agent dev Traceback (mos...
# ask-ai
n
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python -m voice_agent.agent dev

Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "/Users/ayushoswal/coding/inference-engine/voice_agent/agent.py", line 28, in <module>
    from livekit.plugins import (
  File "/Users/ayushoswal/coding/inference-engine/.venv/lib/python3.11/site-packages/livekit/plugins/google/__init__.py", line 22, in <module>
    from . import beta, realtime, tools
  File "/Users/ayushoswal/coding/inference-engine/.venv/lib/python3.11/site-packages/livekit/plugins/google/beta/__init__.py", line 1, in <module>
    from .. import realtime
  File "/Users/ayushoswal/coding/inference-engine/.venv/lib/python3.11/site-packages/livekit/plugins/google/realtime/__init__.py", line 2, in <module>
    from .realtime_api import RealtimeModel
  File "/Users/ayushoswal/coding/inference-engine/.venv/lib/python3.11/site-packages/livekit/plugins/google/realtime/realtime_api.py", line 17, in <module>
    from livekit.agents import APIConnectionError, LanguageCode, llm, utils
ImportError: cannot import name 'LanguageCode' from 'livekit.agents' (/Users/ayushoswal/coding/inference-engine/.venv/lib/python3.11/site-packages/livekit/agents/__init__.py)
t
Thanks for reaching out, Nikhil. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.
Thanks — I see you're running into this ImportError while starting your voice agent: the module at 
livekit/plugins/google/realtime/realtime_api.py
is trying to import 
LanguageCode
from 
livekit.agents
, but that symbol isn't present in the installed 
livekit-agents
package. This is a version/compatibility mismatch between the core Agents package and the Google plugin. What you can do next: 1. Update both packages to compatible versions ◦ From your virtualenv, run:
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pip install --upgrade livekit-agents livekit-plugins-google
• If you use a single package with extras, you can try:
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pip install --upgrade "livekit-agents[google]"
1. Verify versions after upgrading ◦ Run:
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pip show livekit-agents livekit-plugins-google
and confirm both are recent and intended to work together. 1. If you still see the same error ◦ Tell me the versions shown by 
pip show
for both packages. ◦ Also share the first 20 lines of 
livekit/agents/__init__.py
from your venv (path shown in the traceback) so I can confirm whether 
LanguageCode
is defined or exported. Why this helps: the plugin expects 
LanguageCode
to be exported from 
livekit.agents
. Updating synchronizes the API surface so that symbol is available. If upgrades don’t fix it, I can guide you through checking whether 
LanguageCode
was renamed/moved or suggest a temporary patch you can apply while you align package versions. Would you like me to walk you through upgrading now and checking versions? Sources: Google Cloud STT plugin guide | LiveKit Documentation | Agents Framework | livekit/livekit_composite | DeepWiki
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