01-tutorials - [Bug] Failed to invoke agent endpoint: 424 Client Error: Failed Dependency for url

[muhammadnkhan]

In which component is this bug present?

• 01-AgentCore-runtime
• 02-AgentCore-gateway
• 03-AgentCore-identity
• 04-AgentCore-memory
• 05-AgentCore-tools
• 06-AgentCore-observability
• [ X] 07-AgentCore-E2E

If you are reporting multiple bugs, please create a separate issue for each. For documentation improvements, use the documentation improvement issue type.

Bug Description
A clear and concise description of the bug.

In lab-04-agent-core-runtime-ipynb , I am hitting error `Failed to invoke agent endpoint: 424 Client Error: Failed Dependency for url` . This error occurs in "Invoking the agent with session continuity" as shown in screenshot.
I am running the jupyter notebook from Sagemaker studio, every step before this ran fine and I have agentcore runtime up an running. The invocation is failing for some reason mentioned above.

Screenshots
If applicable, add screenshots to help explain your problem.

Please provide screenshots here.

<img width="1678" height="783" alt="Image" src="https://github.com/user-attachments/assets/06139ce9-d7ea-45e5-80b3-35c21b31627b" />

[muhammadnkhan]