502 Bad Gateway Error When Using HTTP Proxy with `shopify theme dev`

[reeswell]

Please confirm that you have:

• Searched existing issues to see if your issue is a duplicate. (If you’ve found a duplicate issue, feel free to add additional information in a comment on it.)
• Reproduced the issue in the latest CLI version.

In which of these areas are you experiencing a problem?

Theme

Expected behavior

The CLI should successfully render the storefront through the configured HTTP proxy.

Actual behavior

The CLI fails to render the storefront with a 502 Bad Gateway error, despite proper proxy configuration.

Verbose output

Verbose output

Failed to render storefront with status 502 (Bad Gateway).
URL: [REDACTED]

TypeError: fetch failed
  at node:internal/deps/undici/undici:13510:13
  at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
  at async render2 [...]
  at async Object.handler [...]
  at async Server.<anonymous> [...]

Reproduction steps

1.Set HTTP proxy environment variables:

$env:SHOPIFY_HTTP_PROXY = "http://127.0.0.1:PORT"
$env:SHOPIFY_HTTPS_PROXY = "http://127.0.0.1:PORT"
2.Run shopify theme dev -e development
3.CLI starts successfully and provides preview URLs
4.Immediately encounters 502 Bad Gateway error

### Operating System

Windows 11

### Shopify CLI version (`shopify --version`)

@shopify/cli/0.0.0-snapshot-20250313171017

### Shell

powershell

### Node version (run `node -v` if you're not sure)

v22.15.1

### What language and version are you using in your application?

_No response_

[jpallard6120]

I have the exact same error here. Log output identical to @reeswell.

• WSL 2 on Windows 10
• @shopify/cli/3.80.7 wsl-x64 node-v24.1.0

[jpallard6120]

I have the exact same error here. Log output identical to @reeswell.

• WSL 2 on Windows 10
• @shopify/cli/3.80.7 wsl-x64 node-v24.1.0

Removing a plugin through shopify plugin reset solved the issue for me.

[reeswell]

I have the exact same error here. Log output identical to @reeswell.

• WSL 2 on Windows 10
• @shopify/cli/3.80.7 wsl-x64 node-v24.1.0

Removing a plugin through shopify plugin reset solved the issue for me.

Thank you for your response. However, when I tried shopify plugins reset, it shows "Found 0 plugin" and the issue still persists.

Here's what I've tried:

1. Ran shopify plugins reset -> Result: "Found 0 plugin"
2. Completely uninstalled and reinstalled Shopify CLI
3. Cleared npm cache and configurations

My environment:

• WSL 2 on Windows 11
• @shopify/cli/3.53.0
• Node.js v22.15.1
• • Theme: Liquid theme

[charlespwd]

Do you have docs for the SHOPIFY_HTTP_PROXY? Couldn't find anything.

[charlespwd]

Looks l like a CLI core/kit issue

[reeswell]

Do you have docs for the SHOPIFY_HTTP_PROXY? Couldn't find anything.

#5520

[fredmanxu]

Same error, How did you finally solve it?

[HowardTangOvO]

Same error, Is there any solution for this?

[cmoaciopm]

Same error. Any update for this issue?

[wmlutz]

I am also having this problem. I'm commenting so I get notifications if an answer pops up.