算子不支持

[the-jsc]

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Describe the bug

from paddlenlp import Taskflow
ner = Taskflow(task='ner', mode='fast')

该模型使用paddle2onnx报错

[Paddle2ONNX] Oops, there are some operators not supported yet, including viterbi_decode,
[ERROR] Due to the unsupported operators, the conversion is aborted.

Informations (please complete the following information):

• Inference engine for deployment: TensorFlow Serving
• Why convert to onnx：模型 → onnx → pb，以便Java调用
• Paddle2ONNX Version: paddle2onnx-1.3.1 with python>=3.8, paddlepaddle>=2.0.0
• Email/Wechat/Phone: [email protected]

Screenshots

Additional context