error when I launch an application from vscode code server port proxy another domain and it doesn't

Hi guys, today in one of my servers, I installed coder server to create users and docker-based workspaces for me and my friends, I'm doing backend in spring boot and when I want to test the endpoint I need to access it port 3000 but from my workspace I get this error.
This error does not appear in my other unique environment from another server
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