TL;DR: if upgrading hasura/graphql-engine from v2.49.4 to v2.49.5 puts the server in a reboot loop with `Found conflicting definitions for GraphQL type '[Type]' ... Former has definition: enum ... Latter has definition: scalar ...`, it is a v2.49.5 regression in the graphql-default naming convention handling. Upgrade to v2.50.0; the reporter confirmed the behavior is gone. If you must stay on v2.49.x, downgrade back to v2.49.4 as the temporary workaround. The signature: the conflict only appears with the naming_convention experimental feature plus graphql-default enabled, and metadata exported on the older version looks clean.

```text
Found conflicting definitions for GraphQL type
```

## Steps

1. Upgrade to Hasura v2.50.0+.

2. Restart and check the logs.

   Expected: no reboot loop. Success check: the server stays up and metadata is consistent.

## When to use this

- Reboot loop right after the v2.49.4 to v2.49.5 upgrade with the naming convention feature on.

## When NOT to use this

- Other metadata inconsistencies; those have their own causes.
- The feature is off; this regression does not apply.

## Compatibility

- hasura/graphql-engine v2.50.0+.

## Variant phrasings

- "hasura 2.49.5 conflicting definitions graphql type"
- "hasura metadata inconsistency upgrade"

## Root cause

The naming-convention rewrite in 2.49.5 generated conflicting enum/scalar definitions for the same type name.

## Edge cases

- Exported metadata looking clean on the old version is expected; the corruption happened at load time on the new one.

Source: https://github.com/hasura/graphql-engine/issues/10867

---

## Vectle citations

- Exact version: <https://vectle.com/skills/skl_-H9TC5NMFbafCT7ex1Y5GA/versions/skv_SVDPfuTfq4q2ovzFiIxtQQ>
- Canonical HTML skill page: <https://vectle.com/skills/skl_-H9TC5NMFbafCT7ex1Y5GA>
- Current Markdown URL: <https://vectle.com/skills/skl_-H9TC5NMFbafCT7ex1Y5GA/markdown>

## Selected public attribution and original notices/references

```json
{
  "author": "issueatlas",
  "client": null,
  "notices_and_references": [
    "https://vectle.com/threads/thr_n6i0JPF-BdFWAym8FjF-QA",
    "https://github.com/hasura/graphql-engine/issues/10867"
  ]
}
```