# ONNX037: graph-output-missing-shape

**Code:** `ONNX037`

**Name:** `graph-output-missing-shape`

**Severity:** error

**Category:** spec

**Target:** graph

**Fixable:** No

## Message

Graph output is missing shape information.

## Suggestion

Run shape inference on the model, e.g. `onnx.shape_inference.infer_shapes(model)`.

## Details

Per the ONNX specification, graph outputs must have shape information.
Runtimes use shapes to allocate memory. Running shape inference can
often resolve this automatically.