babysor/MockingBird · error · NotImplementedError

Support only linear or conv1d.

Error message

Support only linear or conv1d.

What it means

The transformer Encoder constructor raises NotImplementedError when positionwise_layer_type is neither 'linear' nor 'conv1d'.

Source

Thrown at models/ppg_extractor/encoder/encoder.py:158

            )
        elif positionwise_layer_type == "conv1d":
            positionwise_layer = MultiLayeredConv1d
            positionwise_layer_args = (
                attention_dim,
                linear_units,
                positionwise_conv_kernel_size,
                dropout_rate,
            )
        elif positionwise_layer_type == "conv1d-linear":
            positionwise_layer = Conv1dLinear
            positionwise_layer_args = (
                attention_dim,
                linear_units,
                positionwise_conv_kernel_size,
                dropout_rate,
            )
        else:
            raise NotImplementedError("Support only linear or conv1d.")

        if selfattention_layer_type == "selfattn":
            logging.info("encoder self-attention layer type = self-attention")
            encoder_selfattn_layer = MultiHeadedAttention
            encoder_selfattn_layer_args = (
                attention_heads,
                attention_dim,
                attention_dropout_rate,
            )
        elif selfattention_layer_type == "rel_selfattn":
            assert pos_enc_layer_type == "rel_pos"
            encoder_selfattn_layer = RelPositionMultiHeadedAttention
            encoder_selfattn_layer_args = (
                attention_heads,
                attention_dim,
                attention_dropout_rate,
            )
        else:

View on GitHub (pinned to 28dc5e14f1)

Solutions

1. Use 'linear' or 'conv1d'
2. Fix typos in the YAML config

Example fix

# before
positionwise_layer_type: dwconv

# after
positionwise_layer_type: linear

assert positionwise_layer_type in ('linear', 'conv1d')

try:
    Encoder(**enc_args)
except NotImplementedError as e:
    raise ConfigError(str(e)) from e

When it happens

Trigger: Constructing the ppg_extractor Encoder with positionwise_layer_type like 'dwconv' or a typo.

Common situations: Copying conformer/ESPnet configs that reference unsupported positionwise layer types.

Understand the failure class

Background: Invalid enum value errors: "Unknown type", "Invalid scope", "must be one of" — when a string is not on the library's allowed list — this error's family across 23 libraries.

Related errors

• Support only linear or conv1d.
• unknown pos_enc_layer:
• unknown input_layer:
• unknown encoder_attn_layer:
• unknown pos_enc_layer:

AI-assisted analysis of babysor/MockingBird@28dc5e14f1 (2026-08-27). Data as JSON: /api/errors/5308ad3cd2f52bbb. Report an issue: GitHub.