JWT Plugin Returning HTTP 500s

### Is there an existing issue for this? - [x] I have searched the existing issues ### Kong version (`$ kong version`) 3.11.0.3 and 3.13.0.0 ### Current Behavior When we send an invalid JWT in the authorization header, we get the following error along with an HTTP 500. ``` { "message":"An unexpected error occurred", "request_id":"asdfasdfasdf" } ``` ### Expected Behavior We should instead receive an HTTP 401. ### Steps To Reproduce Send an HTTP get request with an invalid JWT in the authorization header. ### Anything else? I see this previous issue but it doesn't seem to be resolved. https://github.com/Kong/kong/issues/1329 Example error log: ``` 2026/02/04 20:47:01 [error] 2671#0: *9018354 [kong] init.lua:443 [jwt] ./jwt/handler.lua:353: attempt to index local 'hdr' (a nil value), client: x.x.x.x, server: kong, request: "GET /api/v1/omg HTTP/1.1", host: "blah.cool.io", request_id: "asdfadsfdsf" ``` JWT plugin configuration: ``` enabled: true tags: - super-cool protocols: - grpc - grpcs - http - https name: jwt service: id: -asdfasdfadsf config: uri_param_names: - jwt maximum_expiration: 0 claims_to_verify: - exp anonymous: null secret_is_base64: false realm: null key_claim_name: sub header_names: - authorization run_on_preflight: true cookie_names: [] ```