# Error fix of the 503 loop

**URL:** <https://discuss.huggingface.co/t/error-fix-of-the-503-loop/177164>\
**Category:** 🤗Transformers\
**Created:** [June 25, 2026, 9:43am UTC](https://discuss.huggingface.co/t/error-fix-of-the-503-loop/177164 "2026-06-25T09:43:07Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![ronnie-katende](https://sea2.discourse-cdn.com/hellohellohello/user_avatar/discuss.huggingface.co/ronnie-katende/32/61146_2.png) [@ronnie-katende](https://discuss.huggingface.co/u/ronnie-katende)\
**Post date:** [June 25, 2026, 9:43am UTC](https://discuss.huggingface.co/t/error-fix-of-the-503-loop/177164/1 "2026-06-25T09:43:07Z")

</div>

**Title:** Space stuck in 503 loop — restart and commits not working

**Body:**

> My Space is stuck in a 503 error and cannot be restarted. I have tried:
> 
> - Clicking “Restart Space” and “Factory Rebuild” from the UI
> - Pushing multiple new commits (10–16 minutes ago)
> 
> None of these have triggered a rebuild. The Space remains paused.
> 
> **Request ID:** `Root=1-6a3cf6e6-7fc29a29189ed6bc5e04fc5b`  
> **Space URL:** [paste your Space URL here]
> 
> Could you please manually trigger a restart or clear the container state? Thank you.

---

<div class="post-metadata">

**Author:** ![John6666](https://sea2.discourse-cdn.com/hellohellohello/user_avatar/discuss.huggingface.co/john6666/32/27664_2.png) [@John6666](https://discuss.huggingface.co/u/John6666)\
**Post date:** [June 25, 2026, 10:18am UTC](https://discuss.huggingface.co/t/error-fix-of-the-503-loop/177164/2 "2026-06-25T10:18:42Z")

</div>

Hmm… If the symptom is really “stuck in `PAUSED`”, **my personal impression is** that many of these cases do not get fixed until `website@huggingface.co` looks at them from the backend side. There are exceptions, of course, but I would treat this as a Space-state / lifecycle / possible moderation-lock issue first, not as a normal app crash. Details:

* * *

Small note first: the Space URL in the post is still a placeholder, so nobody outside HF can inspect the actual repo/logs yet. But as a general decision tree, I would debug this by separating `503` from `PAUSED`.

`503` alone is generic.  
`PAUSED` + restart failing + factory rebuild failing + commits not dispatching a new build is the more important pattern.

## Quick decision tree

| What you observe | Most likely bucket | First useful check | Next action |
| --- | --- | --- | --- |
| Build logs update and show an error | Build failure | Build log | Fix dependency/Docker/build error |
| Container logs update and show a traceback | App/runtime crash | Container log | Fix app crash, missing env vars, model download, etc. |
| App logs say it is running, but browser shows 503 | Port/healthcheck/routing issue | Port, host binding, `app_port`, healthcheck | Fix Space config / server binding |
| Restart and Factory Rebuild fail, commits do not trigger build, logs do not update | Space lifecycle / builder dispatch / stuck state | Runtime API | Likely needs HF-side inspection |
| Runtime API says `Flagged as abusive`, `abuse-handler`, `RepoScanner`, `Cloudflare`, `tunnel`, `proxy`, etc. | Moderation / scanner / policy lock | Runtime API `raw` / `errorMessage` | Email HF with evidence and ask for review |
| Many unrelated Spaces/users affected | Platform incident | HF status page | Wait / follow incident |

So I would not conclude the root cause from `503` alone. But if the Space is really stuck in `PAUSED` and no build is being dispatched, I would stop pushing repeated commits and first inspect the runtime state.

## First check: Space runtime state

Hugging Face documents runtime-management APIs in `huggingface_hub`, including `get_space_runtime()`, `fetch_space_logs()`, and `restart_space()`:

[https://huggingface.co/docs/huggingface\_hub/en/package\_reference/space\_runtime](https://huggingface.co/docs/huggingface_hub/en/package_reference/space_runtime)

Try this locally:

```python
from huggingface_hub import HfApi

api = HfApi(token="hf_xxx") # useful if the Space is private
runtime = api.get_space_runtime("OWNER/SPACE_NAME")

print("stage:", runtime.stage)
print("hardware:", runtime.hardware)
print("requested_hardware:", runtime.requested_hardware)
print("raw:", runtime.raw)

```

Or inspect the raw endpoint:

```plaintext
https://huggingface.co/api/spaces/OWNER/SPACE_NAME/runtime

```

With auth:

```bash
curl -H "Authorization: Bearer $HF_TOKEN" \
  https://huggingface.co/api/spaces/OWNER/SPACE_NAME/runtime

```

Look for:

```plaintext
stage
hardware
requested_hardware
raw
errorMessage
abuse / moderation-related fields, if present

```

Important words to notice:

```plaintext
Flagged as abusive
abuse-handler
RepoScanner
Cloudflare
tunnel
proxy
trojan proxy

```

If any of those appear, this is probably not a normal build failure.

## Practical branch guide

### Branch A — Runtime output shows an abuse / moderation / scanner message

If the runtime output says something like:

```plaintext
Flagged as abusive
abuse-handler
RepoScanner
Cloudflare
tunnel
proxy
trojan proxy

```

then I would treat it as a HF-side review case.

That does **not** prove that you intentionally did anything wrong. It only means the Space may be paused by an automated scanner or policy mechanism, and more commits may not unlock it.

In that case, I would email `website@huggingface.co` with a compact, evidence-heavy report:

```plaintext
Subject: Space stuck in PAUSED / 503 loop - possible false positive or lifecycle lock

Space URL:
HF username:
Request ID:
Exact failed restart time, with timezone:
Runtime API output:
Build log status:
Container log status:
SDK type:
Hardware:
Last known working commit:
Recent changes:
What the Space does:
Why it is not a proxy/tunnel/relay/scraper/spam/abuse service:
Any suspicious files/dependencies already removed:

```

The key is to give HF enough backend correlation data: Space URL, Request ID, timestamp, and runtime output.

### Branch B — No abuse message, but build never starts

If there is no moderation/scanner message, but:

```plaintext
Space remains PAUSED
Restart returns 503
Factory Rebuild returns 503
New commits do not trigger a build
Build logs do not update
Container logs do not update

```

then I would still treat this as a Space lifecycle / builder dispatch / stuck backend state issue.

Forum users usually cannot see the builder queue, lifecycle record, or backend restart error. This may still need HF-side inspection even if it is not an abuse/moderation case.

### Branch C — Build/container logs do update

If logs update, then debug it as a normal Space issue.

Common checks:

- dependency install failure
- Python traceback
- missing secret / missing environment variable
- model download failing at startup
- startup taking too long
- server listening on the wrong port
- server binding to `127.0.0.1` instead of `0.0.0.0`
- Docker `app_port` mismatch
- Dockerfile `EXPOSE` mismatch
- healthcheck/readiness problem

For Docker Spaces, the normal docs to check are:

[https://huggingface.co/docs/hub/spaces-sdks-docker-first-demo](https://huggingface.co/docs/hub/spaces-sdks-docker-first-demo)

For Space metadata/configuration, including startup timeout:

[https://huggingface.co/docs/hub/en/spaces-config-reference](https://huggingface.co/docs/hub/en/spaces-config-reference)

### Branch D — Possible platform incident

Also check:

[https://status.huggingface.co/](https://status.huggingface.co/)

A green status page does not rule out a single-Space or account-specific issue, but if there is an active Spaces / Spaces Proxy incident, changing your repo may not help.

> **Why I would not over-focus on the missing Space URL**
>
> The Space URL is needed for concrete debugging, so it is worth adding.
> 
> But even without it, the general decision tree is still useful:
> 
> 1. Is the Space actually building?
> 2. Are build logs updating?
> 3. Are container logs updating?
> 4. Is the runtime API showing `PAUSED` only, or also an `errorMessage`?
> 5. Does the runtime output mention an abuse/scanner/policy reason?
> 6. If not, is this a builder/lifecycle stuck state?
> 7. If logs exist, what is the first real error?
> 
> So I would lightly ask for the URL, but I would not make the whole reply only about “please provide URL”.

> **Close public cases: similar pattern, not proof**
>
> These do **not** prove that this Space has the same cause. They only show why the runtime API output matters.
> 
> ### `Flagged as abusive` false positive on ZeroGPU Space
> 
> A public report described a Space where the runtime API showed a `PAUSED` stage and `errorMessage: "Flagged as abusive"`. The user reported that restart, factory rebuild, hardware changes, and commits did not trigger a new build.
> 
> [https://discuss.huggingface.co/t/flagged-as-abusive-false-positive-on-zerogpu-space-cannot-restart/176554](https://discuss.huggingface.co/t/flagged-as-abusive-false-positive-on-zerogpu-space-cannot-restart/176554)
> 
> Why it matters:
> 
> - close to the `PAUSED` + restart/factory/commit ineffective pattern
> - suggests that UI actions may not clear a scanner/moderation lock
> - runtime API gave more signal than the UI
> 
> ### RepoScanner / `huggingface:tunnel` / Cloudflare pattern
> 
> Another report said the Space was flagged with:
> 
> ```plaintext
> Detector: RepoScanner
> Category: huggingface:tunnel
> File: API_DOCUMENTATION.md
> Pattern: Cloudflare
> 
> ```
> 
> The user said they removed the flagged file, but the flag persisted and restart/resume/factory rebuild still returned 503.
> 
> [https://discuss.huggingface.co/t/space-flagged-as-abusive-false-positive-cannot-restart-after-removing-flagged-file/173676](https://discuss.huggingface.co/t/space-flagged-as-abusive-false-positive-cannot-restart-after-removing-flagged-file/173676)
> 
> Why it matters:
> 
> - scanner flags may persist after commits
> - removing a suspected file may not immediately unlock the Space
> - Cloudflare/tunnel/proxy-related patterns can be sensitive
> 
> ### `trojan proxy on :7860`
> 
> Another report said the UI only showed a restart failure and no useful logs, but the API later showed:
> 
> ```plaintext
> errorMessage: Flagged as abusive, reason trojan proxy on :7860
> 
> ```
> 
> [https://discuss.huggingface.co/t/space-flagged-as-abusive-reason-trojan-proxy-need-help-unblocking/176099](https://discuss.huggingface.co/t/space-flagged-as-abusive-reason-trojan-proxy-need-help-unblocking/176099)
> 
> Why it matters:
> 
> - the UI symptom was generic
> - the API revealed the more specific branch
> 
> ### Cloudflare rule, files removed, still paused
> 
> There is also a report of a Space paused with:
> 
> ```plaintext
> Flagged as abusive
> Blocked by abuse-handler by rule: Cloudflare
> 
> ```
> 
> The user said they removed Cloudflare/relay/trycloudflare-related files and pushed a clean commit, but the Space remained `PAUSED` and restart/factory reboot still failed.
> 
> [https://discuss.huggingface.co/t/space-flagged-as-abusive-by-cloudflare-rule-files-removed-still-paused-and-restart-fails/177057](https://discuss.huggingface.co/t/space-flagged-as-abusive-by-cloudflare-rule-files-removed-still-paused-and-restart-fails/177057)
> 
> Why it matters:
> 
> - close to “commits do not unlock the Space”
> - useful precedent if the runtime output mentions Cloudflare/proxy/tunnel

> **Partially similar cases: lifecycle / builder / scheduler stuck**
>
> ### Docker Space stuck in build queue / immediately paused
> 
> A public report describes Docker Spaces stuck in `Build Queued` or immediately flipping to `Paused`, with restart/factory-rebuild/resume returning HTTP 503.
> 
> [https://discuss.huggingface.co/t/docker-space-stuck-in-build-queued-immediately-paused-account-3ol1v/176589](https://discuss.huggingface.co/t/docker-space-stuck-in-build-queued-immediately-paused-account-3ol1v/176589)
> 
> Why it matters:
> 
> - build may never actually start
> - app-code changes may not test anything if the builder is not dispatched
> - Space lifecycle state can mimic app failure from the UI
> 
> This is a different bucket from moderation, but the visible symptoms can overlap.

> **Similar-looking but probably different cases**
>
> ### Gradio issue: paused Space, restart 503, commit not taking effect
> 
> There is a Gradio GitHub issue where a Space stayed paused, restart returned 503, and commits did not appear to take effect:
> 
> [https://github.com/gradio-app/gradio/issues/12459](https://github.com/gradio-app/gradio/issues/12459)
> 
> Why it is useful:
> 
> - similar surface symptom
> - reminder not to jump straight to “abuse flag”
> 
> Why it may differ:
> 
> - may involve framework/app/runtime behavior rather than moderation
> 
> ### Docker/Streamlit-style health or routing issue
> 
> There are cases where logs show the app running, but the browser still returns 503. Those can be port, routing, healthcheck, or proxy-readiness issues rather than moderation locks.
> 
> [https://discuss.huggingface.co/t/503-cant-rebuild-my-space-its-always-paused-or-503/174302](https://discuss.huggingface.co/t/503-cant-rebuild-my-space-its-always-paused-or-503/174302)
> 
> Why it is useful:
> 
> - counterexample to “all 503 loops are moderation”
> - if logs are active, debug the app/container path first

> **Policy-sensitive patterns: why Cloudflare/proxy/tunnel wording matters**
>
> Hugging Face’s Content Policy includes platform-abuse language around restriction-bypass patterns such as Cloudflare Tunnel, TOR, proxies, VNC, Chrome Remote Server, and similar tools:
> 
> [https://huggingface.co/content-policy](https://huggingface.co/content-policy)
> 
> This does **not** mean the Space owner violated the policy.
> 
> It only means that if the runtime output or scanner output mentions Cloudflare, tunnel, proxy, relay, remote browser, VNC, or similar wording, it is worth explaining the legitimate use clearly when contacting HF.
> 
> A useful support phrasing would be:
> 
> ```plaintext
> My Space appears to be stuck in PAUSED and UI restart/factory rebuild both return 503. New commits do not dispatch a build. The runtime API shows the following output: ...
> 
> If this is an automated moderation or scanner flag, I believe it may be a false positive. The Space is used for ... It is not intended to provide proxy, tunnel, relay, scraping, spam, remote-browser, or restriction-bypass functionality.
> 
> Could someone review or clear the stuck Space state?
> 
> ```

## What I would avoid for now

I would avoid:

- pushing many empty commits before checking whether the builder is actually starting
- assuming `503` automatically means an abuse flag
- assuming it is only an app bug if no logs are updating
- deleting random files without checking the runtime output first
- posting tokens, secrets, full environment dumps, or private logs publicly
- creating many duplicate Spaces before knowing whether this is account/namespace/lifecycle-related

A small duplicate/minimal Space test can be useful, but if the issue is account-side or lifecycle-side, many duplicates may just add noise.

## Final practical recommendation

I would treat this as a decision tree:

```plaintext
Does runtime API show abuse/scanner/policy wording?
  -> Email HF with Space URL, Request ID, runtime output, timestamps, and legitimate-use explanation.

No abuse/scanner wording, but build never starts?
  -> Still likely needs HF-side inspection; report it as a lifecycle/builder/PAUSED-state issue.

Build/container logs update?
  -> Debug as a normal app/build/container/healthcheck issue.

Many Spaces affected?
  -> Check HF status before changing repo code.

```

So yes, if the Space is genuinely stuck in `PAUSED`, my first serious path would be `website@huggingface.co` with the runtime API output attached. The Space URL is still needed for a concrete answer, but the general diagnosis path above should help decide whether this is app-level debugging or an HF-side Space-state issue.