[GH-ISSUE #41] [Bug]: Client sent an HTTP request to an HTTPS server Error pentagi #20

New Issue

2026-06-06T22:08:02-04:00

yindo commented

2026-06-06 22:08:02 -04:00

Originally created by @andrey-yalta on GitHub (May 28, 2025).
Original GitHub issue: https://github.com/vxcontrol/pentagi/issues/41

Originally assigned to: @asdek on GitHub.

Affected Component

Core Services (Frontend UI/Backend API)

Describe the bug

Hello, guys!
I successfully installed pentagi according to the instructions (Quick Start), launched the docker, but when going to the address http://127.0.0.1:8443/ I see the following entry: "Client sent an HTTP request to an HTTPS server." and the application is missing. Tell me what could have gone wrong?

Steps to Reproduce

Basic install
Visit localhost:8443

System Configuration

Kali linux 2025.1

Logs and Artifacts

No response

Screenshots or Recordings

No response

Verification

I have checked that this issue hasn't been already reported
I have provided all relevant configuration files (with sensitive data removed)
I have included relevant logs and error messages
I am running the latest version of PentAGI

Originally created by @andrey-yalta on GitHub (May 28, 2025). Original GitHub issue: https://github.com/vxcontrol/pentagi/issues/41 Originally assigned to: @asdek on GitHub. ### Affected Component Core Services (Frontend UI/Backend API) ### Describe the bug Hello, guys! I successfully installed pentagi according to the instructions (Quick Start), launched the docker, but when going to the address http://127.0.0.1:8443/ I see the following entry: "Client sent an HTTP request to an HTTPS server." and the application is missing. Tell me what could have gone wrong? <img width="1101" alt="Image" src="https://github.com/user-attachments/assets/540701ca-9c6a-4f0e-8c42-5915446cde4d" /> ### Steps to Reproduce 1. Basic install 2. Visit localhost:8443 ### System Configuration Kali linux 2025.1 ### Logs and Artifacts _No response_ ### Screenshots or Recordings _No response_ ### Verification - [ ] I have checked that this issue hasn't been already reported - [ ] I have provided all relevant configuration files (with sensitive data removed) - [ ] I have included relevant logs and error messages - [ ] I am running the latest version of PentAGI

yindo added the bug label 2026-06-06 22:08:02 -04:00

yindo closed this issue

2026-06-06 22:08:02 -04:00

yindo commented

2026-06-06 22:08:02 -04:00

@asdek commented on GitHub (May 28, 2025):

Hello @andrey-yalta

That's the correct error message - you're trying to use plain HTTP to access an HTTPS server. Simply use https://127.0.0.1:8443 instead.

This happens because if your .env file is based on .env.example, you have the SERVER_USE_SSL feature activated, which generates self-signed SSL certificates during startup.

Your browser might show a security warning about the self-signed certificate, which is normal in this development environment.

@asdek commented on GitHub (May 28, 2025): Hello @andrey-yalta That's the correct error message - you're trying to use plain HTTP to access an HTTPS server. Simply use https://127.0.0.1:8443 instead. This happens because if your `.env` file is based on `.env.example`, you have the [SERVER_USE_SSL feature](https://github.com/vxcontrol/pentagi/blob/master/.env.example#L48) activated, which [generates self-signed SSL certificates](https://github.com/vxcontrol/pentagi/blob/master/entrypoint.sh#L11) during startup. Your browser might show a security warning about the self-signed certificate, which is normal in this development environment.

yindo commented

2026-06-06 22:08:03 -04:00