AWS Bedrock Having Authentication Issues Causing the Workflow to Not Run

[jfang]

Describe the problem/error/question

When I try to run an AI Chat workflow, it says workflow could not be started. I think it has something to do with the AWS Bedrock authentication process.

I’ve tried different LLMs, OpenAI, and Groq works, but using AWS Bedrock results the error message.

What is the error message (if any)?

When I go into the Credentials section, AWS Bedrock has “Error fetching options from AWS Bedrock Chat Model”

Please share your workflow

Share the output returned by the last node

Information on your n8n setup

• n8n version: 1.59.3
• Database (default: SQLite): default
• n8n EXECUTIONS_PROCESS setting (default: own, main): default
• Running n8n via (Docker, npm, n8n cloud, desktop app): Docker on DigitalOcean
• Operating system: Ubuntu 22.04 LTS

[jfang]

The latest n8n version where the AWS credential worked is version 1.58.0. It stopped working with version 1.59.0.

[ria]

Hi @jfang

Can you try to do a reconnect of the credentials? Which error are you getting?

---

AWS credentials | n8n Docs

[jfang]

Hi @ria

Thanks for looking into to this. The connection tested successfully.

I’m now on n8n version 1.60.1 and the issue is persisting.

I have copied the text from the error and pasted it below.

Workflow could not be started

It was not possible to start workflow!

Problem running workflow

Cannot find module ‘@smithy/signature-v4’ Require stack: - /app/code/node_modules/@n8n/n8n-nodes-langchain/node_modules/@langchain/community/dist/chat_models/bedrock/web.cjs - /app/code/node_modules/@n8n/n8n-nodes-langchain/node_modules/@langchain/community/dist/chat_models/bedrock/index.cjs - /app/code/node_modules/@n8n/n8n-nodes-langchain/node_modules/@langchain/community/chat_models/bedrock.cjs - /app/code/node_modules/@n8n/n8n-nodes-langchain/dist/nodes/llms/LmChatAwsBedrock/LmChatAwsBedrock.node.js - /app/code/node_modules/n8n-core/dist/ClassLoader.js - /app/code/node_modules/n8n-core/dist/index.js - /app/code/node_modules/n8n/dist/config/schema.js - /app/code/node_modules/n8n/dist/config/index.js - /app/code/node_modules/n8n/dist/commands/audit.js - /app/code/node_modules/@oclif/core/lib/module-loader.js - /app/code/node_modules/@oclif/core/lib/help/index.js - /app/code/node_modules/@oclif/core/lib/errors/handle.js - /app/code/node_modules/@oclif/core/lib/errors/index.js - /app/code/node_modules/@oclif/core/lib/config/config.js - /app/code/node_modules/@oclif/core/lib/config/index.js - /app/code/node_modules/@oclif/core/lib/command.js - /app/code/node_modules/@oclif/core/lib/index.js

[ria]

Hi @jfang

Sorry for the late reply. Could you please try version 1.61.0

It might got fixed with this update:

chore: Update Langchain to 0.3 (no-changelog)

[jfang]

Hi @ria,

Yes, it got fixed.

Hopefully future releases will be stablized for this.

Thank you,

Jeff