Nllb Api v3 error got json back

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I want to report an error, when I try to translate any language, using nllb-api latest version, using api/v3, it happens as follows:

Here is the Log:
----------------------------------------------------------------------------- Date: 06/03/2024 22:29:54 SE: 4.0.6.0 - Microsoft Windows NT 10.0.19045.0 - 64-bit Message: NoLanguageLeftBehindApi got json back which is probably an error: {"result":"Hello world. What's going on?"}

But, when i switched back to api/v2/ , everything goes fine.