weaviate/weaviate · error

object %d: %w

Error message

object %d: %w

What it means

CalculatePath computes the path per input object in a loop; if any per-object computation fails, it wraps the inner error as 'object <i>: ...' to identify which search result broke the batch. The message identifies the failing object index; the root cause is in the wrapped inner error.

Source

Thrown at modules/text2vec-contextionary/additional/sempath/builder.go:87

	if params == nil {
		return nil, fmt.Errorf("no params provided")
	}

	dims := len(in[0].Vector)
	if err := params.SetDefaultsAndValidate(len(in), dims); err != nil {
		return nil, errors.Wrap(err, "invalid params")
	}

	searchNeighbors, err := pb.addSearchNeighbors(params)
	if err != nil {
		return nil, err
	}

	for i, obj := range in {
		path, err := pb.calculatePathPerObject(obj, in, params, searchNeighbors)
		if err != nil {
			return nil, fmt.Errorf("object %d: %w", i, err)
		}

		if in[i].AdditionalProperties == nil {
			in[i].AdditionalProperties = models.AdditionalProperties{}
		}

		in[i].AdditionalProperties["semanticPath"] = path
	}

	return in, nil
}

func (pb *PathBuilder) calculatePathPerObject(obj search.Result, allObjects []search.Result, params *Params,
	searchNeighbors []*txt2vecmodels.NearestNeighbor,
) (*txt2vecmodels.SemanticPath, error) {
	dims := len(obj.Vector)
	matrix, neighbors, err := pb.vectorsToMatrix(obj, allObjects, dims, params, searchNeighbors)
	if err != nil {

View on GitHub (pinned to 75aa4b6d11)

Solutions

1. Read the wrapped inner error after 'object <i>:' to find the actual cause
2. Inspect/repair the object at the reported index (fix its vector dimensions or re-vectorize it)
3. Re-run the semanticPath query once the offending object is fixed

res, err := builder.CalculatePath(in, params)
if err != nil {
  var idx int
  if n, _ := fmt.Sscanf(err.Error(), "object %d:", &idx); n == 1 {
    // inspect/fix search result at index idx, then retry without it
  }
  return err
}

When it happens

Trigger: Any failure inside calculatePathPerObject for the i-th result — t-SNE embedding failure, inconsistent vector lengths (see vectorsToMatrix errors), nil neighbors — during a semanticPath query over multiple results.

Common situations: One malformed object (wrong dimensions, missing neighbors) in an otherwise valid semanticPath query; the index tells you which search result to inspect.

Related errors

• item %d has no vector
• have different output results than input %d != %d
• object: inconsistent vector lengths found: dimensions=%d and
• neighbor: inconsistent vector lengths found: dimensions=%d a
• %s

AI-assisted analysis of weaviate/weaviate@75aa4b6d11 (2026-09-04). Data as JSON: /api/errors/0f62993fff2ac6d3. Report an issue: GitHub.