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Sub-pillar · export troubleshooting

Every ONNX export error, with a fix.

When the export step fails — or worse, succeeds silently with wrong outputs — the diagnosis is usually here.

01 · export failure

torch.jit.script failed: control flow

The legacy PyTorch exporter can't capture your model's loops. Remove the dynamic axis, or try the dynamo exporter.

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02 · silent corruption

LSTM export fails or produces wrong outputs

The PyTorch LSTM + dynamic seq_len combination. Static seq_len at export, validate against onnxruntime.

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More export error guides as readers hit them — email yours.