LykosAI/StabilityMatrix · warning · DataValidationException

Width is required

Error message

Width is required

What it means

AddRow in InferenceSettingsViewModel shows a text-entry dialog for a new inference row whose 'Width' field validator throws DataValidationException('Width is required') when the input is null or whitespace. It ensures a width value is supplied before the companion positive-integer check runs.

Solutions

1. Enter a positive integer width (e.g. 1024) in the field before confirming.
2. Use digits only; the follow-up check rejects zero, negatives, and non-numeric text.
3. If adding rows programmatically, pass a pre-validated integer-as-string.

Example fix

// before
if (string.IsNullOrWhiteSpace(text)) throw new DataValidationException("Width is required");
// after
var trimmed = text?.Trim();
if (string.IsNullOrEmpty(trimmed)) throw new DataValidationException("Width is required");
if (!int.TryParse(trimmed, out var width) || width <= 0)
    throw new DataValidationException("Width must be a positive integer");

bool IsValidWidth(string? s) =>
    int.TryParse(s?.Trim(), out var w) && w > 0;
// only submit the dialog when IsValidWidth(widthText)

bool TryParsePositiveInt(string? s, out int value) =>
    int.TryParse(s?.Trim(), out value) && value > 0;

try { await viewModel.AddRow(); }
catch (DataValidationException ex) { SetFieldError(ex.Message); }

When it happens

Trigger: Submitting the Add Row dialog (InferenceSettingsViewModel.cs:298) leaving the Width field empty or whitespace-only.

Common situations: Clicking OK without typing a value; clearing the field intending to cancel; paste of whitespace; typing non-numeric text which triggers the sibling 'Width must be a positive integer' error instead.

Understand the failure class

Background: "must not be empty", "cannot be empty" — required-field validation errors across open-source libraries — this error's family across 41 libraries.

Related errors

• URL is required
• Invalid URL format
• Name is required
• Length cannot be null when latentType is Hunyuan
• Invalid Token

AI-assisted analysis of LykosAI/StabilityMatrix@af93d6ef57 (2026-09-12). Data as JSON: /api/errors/9357777b10180fcf. Report an issue: GitHub.

Appendix: source

Thrown at StabilityMatrix.Avalonia/ViewModels/Settings/InferenceSettingsViewModel.cs:298

            $"Imported {sourceFile.Name}",
            $"The {sourceFile.Name} file has been imported.",
            NotificationType.Success
        );
    }

    [RelayCommand]
    private async Task AddRow()
    {
        // FavoriteDimensions.Add(string.Empty);
        var textFields = new TextBoxField[]
        {
            new()
            {
                Label = "Width",
                Validator = text =>
                {
                    if (string.IsNullOrWhiteSpace(text))
                        throw new DataValidationException("Width is required");

                    if (!int.TryParse(text, out var width) || width <= 0)
                        throw new DataValidationException("Width must be a positive integer");
                },
                Watermark = "1024",
            },
            new()
            {
                Label = "Height",
                Validator = text =>
                {
                    if (string.IsNullOrWhiteSpace(text))
                        throw new DataValidationException("Height is required");

                    if (!int.TryParse(text, out var height) || height <= 0)
                        throw new DataValidationException("Height must be a positive integer");
                },
                Watermark = "1024",

View on GitHub (pinned to af93d6ef57)