Elevenlabs convert text to speech. Error: Authorization failed - please check your credentials Request failed with status code 401

## Describe the problem/error/question
1. Add a node "Elevenlabs"
2. fill fields:
- Credential to connect with: connect a valid API key
- Resource: Speech
- Operation: Text to Speech
- Voice: From list Rachel
- Text: Hello world
3. Click "Execute step"

You will see the auth error. No result is returned.

**Important**. API key is valid, I checked "Voice" resource using the same connection and it works, seems problem in the Speech generation action. My API key has no restrictions

<img width="768" height="813" alt="Image" src="https://github.com/user-attachments/assets/466ace0f-2327-4d20-96a9-d226d34c0a1c" />

<img width="540" height="378" alt="Image" src="https://github.com/user-attachments/assets/06af9e9c-2d4a-43ee-a7b9-4b15a63d71f2" />


## What is the error message (if any)?

Authorization failed - please check your credentials
Request failed with status code 401

Error details:
`{
  "errorMessage": "Authorization failed - please check your credentials",
  "errorDescription": "Request failed with status code 401",
  "errorDetails": {
    "rawErrorMessage": [
      "Request failed with status code 401"
    ],
    "httpCode": "401",
    "errorData": {
      "type": "Buffer",
      "data": [
        123,
        34,
        100,
        101,
        116,
        97,
        105,
        108,
        34,
        58,
        123,
        34,
        115,
        116,
        97,
        116,
        117,
        115,
        34,
        58,
        34,
        100,
        101,
        116,
        101,
        99,
        116,
        101,
        100,
        95,
        117,
        110,
        117,
        115,
        117,
        97,
        108,
        95,
        97,
        99,
        116,
        105,
        118,
        105,
        116,
        121,
        34,
        44,
        34,
        109,
        101,
        115,
        115,
        97,
        103,
        101,
        34,
        58,
        34,
        85,
        110,
        117,
        115,
        117,
        97,
        108,
        32,
        97,
        99,
        116,
        105,
        118,
        105,
        116,
        121,
        32,
        100,
        101,
        116,
        101,
        99,
        116,
        101,
        100,
        46,
        32,
        70,
        114,
        101,
        101,
        32,
        84,
        105,
        101,
        114,
        32,
        117,
        115,
        97,
        103,
        101,
        32,
        100,
        105,
        115,
        97,
        98,
        108,
        101,
        100,
        46,
        32,
        73,
        102,
        32,
        121,
        111,
        117,
        32,
        97,
        114,
        101,
        32,
        117,
        115,
        105,
        110,
        103,
        32,
        97,
        32,
        112,
        114,
        111,
        120,
        121,
        47,
        86,
        80,
        78,
        32,
        121,
        111,
        117,
        32,
        109,
        105,
        103,
        104,
        116,
        32,
        110,
        101,
        101,
        100,
        32,
        116,
        111,
        32,
        112,
        117,
        114,
        99,
        104,
        97,
        115,
        101,
        32,
        97,
        32,
        80,
        97,
        105,
        100,
        32,
        80,
        108,
        97,
        110,
        32,
        116,
        111,
        32,
        110,
        111,
        116,
        32,
        116,
        114,
        105,
        103,
        103,
        101,
        114,
        32,
        111,
        117,
        114,
        32,
        97,
        98,
        117,
        115,
        101,
        32,
        100,
        101,
        116,
        101,
        99,
        116,
        111,
        114,
        115,
        46,
        32,
        70,
        114,
        101,
        101,
        32,
        84,
        105,
        101,
        114,
        32,
        111,
        110,
        108,
        121,
        32,
        119,
        111,
        114,
        107,
        115,
        32,
        105,
        102,
        32,
        117,
        115,
        101,
        114,
        115,
        32,
        100,
        111,
        32,
        110,
        111,
        116,
        32,
        97,
        98,
        117,
        115,
        101,
        32,
        105,
        116,
        44,
        32,
        102,
        111,
        114,
        32,
        101,
        120,
        97,
        109,
        112,
        108,
        101,
        32,
        98,
        121,
        32,
        99,
        114,
        101,
        97,
        116,
        105,
        110,
        103,
        32,
        109,
        117,
        108,
        116,
        105,
        112,
        108,
        101,
        32,
        102,
        114,
        101,
        101,
        32,
        97,
        99,
        99,
        111,
        117,
        110,
        116,
        115,
        46,
        32,
        73,
        102,
        32,
        119,
        101,
        32,
        110,
        111,
        116,
        105,
        99,
        101,
        32,
        116,
        104,
        97,
        116,
        32,
        109,
        97,
        110,
        121,
        32,
        112,
        101,
        111,
        112,
        108,
        101,
        32,
        116,
        114,
        121,
        32,
        116,
        111,
        32,
        97,
        98,
        117,
        115,
        101,
        32,
        105,
        116,
        44,
        32,
        119,
        101,
        32,
        119,
        105,
        108,
        108,
        32,
        110,
        101,
        101,
        100,
        32,
        116,
        111,
        32,
        114,
        101,
        99,
        111,
        110,
        115,
        105,
        100,
        101,
        114,
        32,
        70,
        114,
        101,
        101,
        32,
        84,
        105,
        101,
        114,
        32,
        97,
        108,
        116,
        111,
        103,
        101,
        116,
        104,
        101,
        114,
        46,
        32,
        92,
        110,
        80,
        108,
        101,
        97,
        115,
        101,
        32,
        112,
        108,
        97,
        121,
        32,
        102,
        97,
        105,
        114,
        32,
        97,
        110,
        100,
        32,
        112,
        117,
        114,
        99,
        104,
        97,
        115,
        101,
        32,
        97,
        110,
        121,
        32,
        80,
        97,
        105,
        100,
        32,
        83,
        117,
        98,
        115,
        99,
        114,
        105,
        112,
        116,
        105,
        111,
        110,
        32,
        116,
        111,
        32,
        99,
        111,
        110,
        116,
        105,
        110,
        117,
        101,
        46,
        34,
        125,
        125
      ]
    }
  },
  "n8nDetails": {
    "nodeName": "Convert text to speech",
    "nodeType": "@elevenlabs/n8n-nodes-elevenlabs.elevenLabs",
    "nodeVersion": 1,
    "resource": "speech",
    "operation": "textToSpeech",
    "itemIndex": 0,
    "runIndex": 0,
    "time": "12/07/2025, 12:50:07",
    "n8nVersion": "1.100.1 (Cloud)",
    "binaryDataMode": "filesystem",
    "stackTrace": [
      "NodeApiError: Authorization failed - please check your credentials",
      "    at ExecuteSingleContext.httpRequestWithAuthentication (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file+packages+core_openai@4.103.0_encoding@0.1.13_ws@8.17.1_zod@3.25.67_/node_modules/n8n-core/src/execution-engine/node-execution-context/utils/request-helper-functions.ts:1365:11)",
      "    at processTicksAndRejections (node:internal/process/task_queues:105:5)",
      "    at ExecuteSingleContext.httpRequestWithAuthentication (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file+packages+core_openai@4.103.0_encoding@0.1.13_ws@8.17.1_zod@3.25.67_/node_modules/n8n-core/src/execution-engine/node-execution-context/utils/request-helper-functions.ts:1741:11)",
      "    at RoutingNode.rawRoutingRequest (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file+packages+core_openai@4.103.0_encoding@0.1.13_ws@8.17.1_zod@3.25.67_/node_modules/n8n-core/src/execution-engine/routing-node.ts:568:20)",
      "    at RoutingNode.makeRequest (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file+packages+core_openai@4.103.0_encoding@0.1.13_ws@8.17.1_zod@3.25.67_/node_modules/n8n-core/src/execution-engine/routing-node.ts:762:19)",
      "    at async Promise.allSettled (index 0)",
      "    at RoutingNode.runNode (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file+packages+core_openai@4.103.0_encoding@0.1.13_ws@8.17.1_zod@3.25.67_/node_modules/n8n-core/src/execution-engine/routing-node.ts:273:29)",
      "    at WorkflowExecute.runNode (/usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file+packages+core_openai@4.103.0_encoding@0.1.13_ws@8.17.1_zod@3.25.67_/node_modules/n8n-core/src/execution-engine/workflow-execute.ts:1288:17)",
      "    at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file+packages+core_openai@4.103.0_encoding@0.1.13_ws@8.17.1_zod@3.25.67_/node_modules/n8n-core/src/execution-engine/workflow-execute.ts:1542:27",
      "    at /usr/local/lib/node_modules/n8n/node_modules/.pnpm/n8n-core@file+packages+core_openai@4.103.0_encoding@0.1.13_ws@8.17.1_zod@3.25.67_/node_modules/n8n-core/src/execution-engine/workflow-execute.ts:2108:11"
    ]
  }
}`



## Please share your workflow/screenshots/recording

<img width="351" height="265" alt="Image" src="https://github.com/user-attachments/assets/d4220e83-6afa-4d57-b93d-fce0b992b148" />

<img width="797" height="830" alt="Image" src="https://github.com/user-attachments/assets/83276103-82be-4964-a955-1b3079b76ae8" />


```
(Select the nodes on your canvas and use the keyboard shortcuts CMD+C/CTRL+C and CMD+V/CTRL+V to copy and paste the workflow.)
⚠️ WARNING ⚠️ If you have sensitive data in your workflow (like API keys), please remove it before sharing.
```
```
{
  "nodes": [
    {
      "parameters": {
        "resource": "speech",
        "voice": {
          "__rl": true,
          "value": "21m00Tcm4TlvDq8ikWAM",
          "mode": "list",
          "cachedResultName": "Rachel"
        },
        "text": "how are you",
        "additionalOptions": {},
        "requestOptions": {}
      },
      "type": "@elevenlabs/n8n-nodes-elevenlabs.elevenLabs",
      "typeVersion": 1,
      "position": [
        1840,
        280
      ],
      "id": "47ffc620-3049-4775-bf33-f3c6a413e220",
      "name": "Convert text to speech",
      "credentials": {
        "elevenLabsApi": {
          "id": "c8DDBd9Hm5pF9IQH",
          "name": "ElevenLabs account"
        }
      }
    }
  ],
  "connections": {
    "Convert text to speech": {
      "main": [
        []
      ]
    }
  },
  "pinData": {},
  "meta": {
    "templateCredsSetupCompleted": true,
    "instanceId": "6ddb66561da18d1e690e477f6e5679d1d5e071f16587d6ac0a17403a0622e446"
  }
}
```

## Share the output returned by the last node

No output from the last node is used

## Debug info

### core

- n8nVersion: 1.100.1
- platform: docker (cloud)
- nodeJsVersion: 22.16.0
- database: sqlite
- executionMode: regular
- concurrency: 5
- license: community

### storage

- success: all
- error: all
- progress: false
- manual: true
- binaryMode: filesystem

### pruning

- enabled: true
- maxAge: 168 hours
- maxCount: 2500 executions

### client

- userAgent: mozilla/5.0 (macintosh; intel mac os x 10_15_7) applewebkit/537.36 (khtml, like gecko) chrome/137.0.0.0 safari/537.36
- isTouchDevice: false

Generated at: 2025-07-12T09:17:14.921Z}

Navigation Menu

Uh oh!

Elevenlabs convert text to speech. Error: Authorization failed - please check your credentials Request failed with status code 401 #17252

Describe the problem/error/question

What is the error message (if any)?

Please share your workflow/screenshots/recording

Share the output returned by the last node

Debug info

core

storage

pruning

client

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Uh oh!

Elevenlabs convert text to speech. Error: Authorization failed - please check your credentials Request failed with status code 401 #17252

Description

Describe the problem/error/question

What is the error message (if any)?

Please share your workflow/screenshots/recording

Share the output returned by the last node

Debug info

core

storage

pruning

client

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions