Failed to create session in google ADK web interface

5 hours ago 1
ARTICLE AD BOX

I am running the ADK web interface, but I do not know why the session is not being started. Even UI is a little different. The same code is working in VS Code, even in the cloud shell editor with a different account, but I do not know what's wrong with this account. It was working before, but now it is not working at all.

I am getting these errors in the terminal.

2026-05-01 10:04:30,790 - INFO - envs.py:83 - Loaded .env file for agent3 at /home/user/pro/agent3/.env 2026-05-01 10:04:30,791 - INFO - envs.py:83 - Loaded .env file for agent3 at /home/user/pro/agent3/.env 2026-05-01 10:04:30,801 - INFO - agent_loader.py:131 - Found root_agent in agent3.agent INFO: 127.0.0.1:53546 - "GET /dev/build_graph/agent3 HTTP/1.1" 200 OK INFO: 127.0.0.1:53546 - "GET /dev/build_graph_image/agent3?dark_mode=false HTTP/1.1" 404 Not Found INFO: 127.0.0.1:53546 - "GET /dev/build_graph_image/agent3?dark_mode=true HTTP/1.1" 404 Not Found INFO: 127.0.0.1:53546 - "POST /apps/agent3/users/user/sessions HTTP/1.1" 403 Forbidden ^CINFO: Shutting down

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