FlowiseAI/Flowise · error · Error

Worker input variables values are not provided!

Error message

Worker input variables values are not provided!

What it means

Thrown after computing `workerInputVariables = getInputVariables(workerPrompt)` — the set of placeholders found in the prompt template. The check verifies every placeholder has a corresponding key in workerInputVariablesValues; if any are missing, the prompt cannot be fully rendered and the worker cannot run.

Source

Thrown at packages/components/nodes/multiagents/Worker/Worker.ts:118

        let workerInputVariablesValues: ICommonObject = {}
        if (promptValuesStr) {
            try {
                workerInputVariablesValues = typeof promptValuesStr === 'object' ? promptValuesStr : JSON.parse(promptValuesStr)
            } catch (exception) {
                throw new Error("Invalid JSON in the Worker's Prompt Input Values: " + exception)
            }
        }
        workerInputVariablesValues = handleEscapeCharacters(workerInputVariablesValues, true)

        const llm = model || (supervisor.llm as BaseChatModel)
        const multiModalMessageContent = supervisor?.multiModalMessageContent || []

        const abortControllerSignal = options.signal as AbortController
        const workerInputVariables = getInputVariables(workerPrompt)

        if (!workerInputVariables.every((element) => Object.keys(workerInputVariablesValues).includes(element))) {
            throw new Error('Worker input variables values are not provided!')
        }

        const agent = await createAgent(
            llm,
            [...tools],
            workerPrompt,
            multiModalMessageContent,
            workerInputVariablesValues,
            maxIterations,
            {
                sessionId: options.sessionId,
                chatId: options.chatId,
                input
            }
        )

        const workerNode = async (state: ITeamState, config: RunnableConfig) =>
            await agentNode(

View on GitHub (pinned to abe4a8601a)

Solutions

1. Inspect `workerInputVariables` (log it) and add every missing key to promptValues.
2. Ensure spelling and case of placeholder names match exactly between template `{Name}` and promptValues key `Name`.
3. Remove unused placeholders from the template.
4. Optionally make unused variables fall back to empty strings instead of throwing.

Example fix

// before
if (!workerInputVariables.every((element) => Object.keys(workerInputVariablesValues).includes(element))) {
  throw new Error('Worker input variables values are not provided!')
}
// after
const missing = workerInputVariables.filter((v) => !Object.keys(workerInputVariablesValues).includes(v))
if (missing.length) {
  throw new Error(`Worker prompt is missing values for: ${missing.join(', ')}`)
}

const required = getInputVariables(workerPrompt)
const provided = Object.keys(workerInputVariablesValues)
const missing = required.filter((v) => !provided.includes(v))
if (missing.length) throw new Error(`Worker prompt missing values for: ${missing.join(', ')}`)

When it happens

Trigger: Prompt template contains `{foo}` and `{bar}` but promptValues only provides `foo`; placeholder name typo between template and values; template was edited to add a new variable without updating values.

Common situations: Iterating on a worker prompt and adding new placeholders; renaming variables in the template but not in the JSON values; case-sensitivity mismatches.

Related errors

• Supervisor name is required!
• Worker name is required!
• Worker prompt is required!
• Invalid JSON in the Worker's Prompt Input Values: ${exceptio
• Invalid JSON in the PromptTemplate's promptValues: ${excepti

AI-assisted analysis of FlowiseAI/Flowise@abe4a8601a (2026-08-12). Data as JSON: /api/errors/f1bfc7c310be58d4. Report an issue: GitHub.