linshenkx/prompt-optimizer · warning · Error

customHeaderError

Error message

customHeaderError

What it means

saveForm runs getCustomHeaderValidationMessage() and rethrows its message when custom HTTP headers on the form are malformed. This is not a fixed message: the thrown text is the validation message produced for the invalid header entry (duplicate names, empty keys, invalid characters, or bad JSON where applicable).

Solutions

1. Fix or remove the offending custom header row (fill both name and value, remove duplicates/empties)
2. Trim header names/values before validation
3. If headers are unused, clear the custom headers list entirely
4. Add row-level validation in the UI so the user sees which row is invalid

Example fix

// before
Authorization: 
Authorization: Bearer x

// after
Authorization: Bearer x

const headers = form.value.customHeaders.filter((h) => h.name.trim() && h.value.trim())
const names = headers.map((h) => h.name.trim().toLowerCase())
if (new Set(names).size !== names.length) { /* duplicate header; fix before save */ }

const isValidHeader = (h: { name?: string; value?: string }): h is { name: string; value: string } =>
  typeof h.name === 'string' && h.name.trim().length > 0 && typeof h.value === 'string' && h.value.trim().length > 0

try { await saveForm() } catch (e) { if (String(e?.message) !== 'No provider or model selected' && /header/i.test(String(e?.message))) { highlightHeaderRow() } else throw e }

When it happens

Trigger: Adding custom headers in the model form with an empty header name, a name/value containing invalid characters, whitespace-only entries, or duplicate header names. Any non-empty return from the validator triggers the throw before save.

Common situations: Pasting a header row with trailing newline creating an empty entry; duplicating an existing header; copy-pasting 'Authorization' twice; leaving a header row half-filled after adding a row in the UI.

Related errors

• No provider or model selected

AI-assisted analysis of linshenkx/prompt-optimizer@3e677b1d9f (2026-08-27). Data as JSON: /api/errors/32bbd8b6dc3b8a43. Report an issue: GitHub.

Appendix: source

Thrown at packages/ui/src/composables/model/useTextModelManager.ts:905

      modelMeta,
      connectionConfig,
      paramOverrides: { ...(form.value.paramOverrides ?? {}) }
    } as TextModelConfig

    await modelManager.addModel(modelKey, newConfig)
    return modelKey
  }

  const saveForm = async () => {
    if (isSaving.value) return null
    if (!canSaveForm.value) {
      throw new Error('No provider or model selected')
    }
    isSaving.value = true
    try {
      const customHeaderError = getCustomHeaderValidationMessage()
      if (customHeaderError) {
        throw new Error(customHeaderError)
      }

      const savedId = editingModelId.value ? await updateExistingModel() : await createNewModel()
      await loadModels()
      return savedId
    } finally {
      isSaving.value = false
    }
  }

  const testFormConnection = async () => {
    // 使用 canTestFormConnection 的完整校验逻辑
    if (!canTestFormConnection.value) return

    isTestingFormConnection.value = true
    formConnectionStatus.value = { type: 'info', message: t('modelManager.testing') }

    try {

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