ToolJet/ToolJet · error · QueryError

Method not found

Error message

Method not found

What it means

invokeMethod is the plugin's dynamic-method entry point used by ToolJet for inspector/dropdown data loading. The DynamoDB implementation only registers 'listTables'; any other methodName reaches the unconditional throw at the end of the method. This is a capability guard, not a transient failure — the plugin deliberately exposes a single method.

Source

Thrown at plugins/packages/dynamodb/lib/index.ts:147

    if (Object.keys(values).length === 0) return {};
    return { ExpressionAttributeValues: values };
  }

  private mergeExpressionAttributeValues(condition: any, pairs?: [string, string][]): void {
    const values = this.buildExpressionAttributeValues(pairs);
    if (Object.keys(values).length === 0) return;
    condition.ExpressionAttributeValues = {
      ...(condition.ExpressionAttributeValues || {}),
      ...values,
    };
  }

  async invokeMethod(methodName: string, _context: unknown, sourceOptions: SourceOptions, args?: any): Promise<unknown> {
    if (methodName === 'listTables') {
      const client = await this.getConnection(sourceOptions, { operation: 'list_tables' });
      return await this._listAllTables(client, args);
    }
    throw new QueryError('Method not found', `Method '${methodName}' is not supported by the DynamoDB plugin`, {});
  }

  private async _listAllTables(
    client: DynamoDBClient,
    args?: any
  ): Promise<{ items: Array<{ value: string; label: string }>; totalCount: number }> {
    const tables: string[] = [];
    let lastEvaluatedTableName: string | undefined;

    try {
      do {
        const command = new ListTablesCommand({ ExclusiveStartTableName: lastEvaluatedTableName, Limit: 100 });
        const data = await client.send(command);
        tables.push(...(data.TableNames || []));
        lastEvaluatedTableName = data.LastEvaluatedTableName;
      } while (lastEvaluatedTableName);
    } catch (err) {
      throw new QueryError('Could not fetch tables', err.message, {});

View on GitHub (pinned to 20602a8e10)

Solutions

1. Confirm the only supported methodName for DynamoDB is 'listTables'; change the caller to use it or pick a different operation.
2. If you need table metadata beyond names, run a 'describe_table' operation through run() instead of invokeMethod.
3. If methodName arrives empty, fix the upstream binding so it resolves to 'listTables'.

Example fix

// before
await plugin.invokeMethod('describeTables', ctx, sourceOptions, args);
// after — use the run() path for describe, invokeMethod only for listing
await plugin.run(sourceOptions, { operation: 'describe_table', table: 'myTable' });

const SUPPORTED_METHODS = ['listTables'];
if (!SUPPORTED_METHODS.includes(methodName)) {
  throw new Error(`DynamoDB invokeMethod supports only: ${SUPPORTED_METHODS.join(', ')}`);
}

function isDynamoInvokeMethod(m: unknown): m is 'listTables' { return m === 'listTables'; }

try { await plugin.invokeMethod(methodName, ctx, sourceOptions, args); }
catch (e) { if (e instanceof QueryError && e.message === 'Method not found') { /* fall back to run() with operation */ } else throw e; }

When it happens

Trigger: ToolJet (or a custom client) calls invokeMethod with a methodName other than 'listTables' — for example 'getItems', 'describe', or a method name that exists on another plugin (e.g. MongoDB's listDatabases) but was copy-pasted into a DynamoDB query. Also fires if methodName is undefined because a component binding resolved to nothing.

Common situations: Reusing a query or component configuration from a different datasource plugin that exposes more invokeMethod hooks. A frontend schema/widget that enumerates methods generically and surfaces one DynamoDB does not implement. An older app definition referencing a method that was never implemented or was removed.

Related errors

• Query could not be completed
• MISSING_ACCESS_TOKEN
• Select an operation
• Client Id is required
• Client Secret is required

AI-assisted analysis of ToolJet/ToolJet@20602a8e10 (2026-08-13). Data as JSON: /api/errors/8865e5dfc7eb848c. Report an issue: GitHub.