bug: jsonschema.lua:46: attempt to call field 'find' (a nil value)

[MarcCain-Scott]

Current Behavior

Using the Kubernetes Ingress Controller version 1.8.0

After the service has been running for a while (not exactly sure how long it needs to be). Any change or new ApisixRoute resource causes a 500 error and the change is not applied.

Restarting the apisix deployment kubectl rollout restart deployment apisix fixes it for a while. The change is applied successfully and everything works for a while until it stops working.

Expected Behavior

When an ApisixRoute resource is change, the change should be reflected in the Apisix server without any errors.

Error Logs

2025/01/14 15:47:14 [error] 49#49: *25365444 lua entry thread aborted: runtime error: /usr/local/apisix//deps/share/lua/5.1/jsonschema.lua:46: attempt to call field 'find' (a nil value)
stack traceback:
coroutine 0:
/usr/local/apisix//deps/share/lua/5.1/jsonschema.lua: in function 'custom_match_pattern'
[string "jsonschema:anonymous"]:244: in function 'var_0_15'
[string "jsonschema:anonymous"]:262: in function 'var_0_14'
[string "jsonschema:anonymous"]:2832: in function 'check'
/usr/local/apisix/apisix/admin/routes.lua:36: in function 'checker'
/usr/local/apisix/apisix/admin/resource.lua:128: in function 'check_conf'
/usr/local/apisix/apisix/admin/resource.lua:243: in function </usr/local/apisix/apisix/admin/resource.lua:230>
/usr/local/apisix/apisix/admin/init.lua:233: in function 'handler'
/usr/local/apisix//deps/share/lua/5.1/resty/radixtree.lua:1013: in function 'dispatch'
/usr/local/apisix/apisix/init.lua:945: in function 'http_admin'

Steps to Reproduce

1. Install the kubernetes apisix/apisix helm chart from repo https://charts.apiseven.com as in the instruction
2. Create a ApisixRoute maybe also a ApisixPluginConfig with it, I'm not sure exactly
3. I don't know if it is wait a while or do a number of changes but eventually a change to the ApisixRoute will cause the above error.

Environment

• apisix helm chart version: apisix-2.10.0
• APISIX version (run apisix version): 3.11.0
• Operating system (run uname -a): Linux apisix-7c877b459c-vglhx 6.1.0-28-amd64 change: added doc of how to load plugin. apisix#1 SMP PREEMPT_DYNAMIC Debian 6.1.119-1 (2024-11-22) x86_64 GNU/Linux
• OpenResty / Nginx version (run openresty -V or nginx -V): openresty/1.25.3.2
• etcd version, if relevant (run curl http://127.0.0.1:9090/v1/server_info):
• APISIX Dashboard version, if relevant: NA
• Plugin runner version, for issues related to plugin runners:
• LuaRocks version, for installation issues (run luarocks --version):

[Baoyuantop]

Hi @MarcCain-Scott, sorry for taking so long to reply, I want to ask if the problem still exists? Are there more clear steps to reproduce it? In addition, we have released version 2.0.0-rc3, you can refer to https://apisix.apache.org/docs/ingress-controller/upgrade-guide/

[MarcCain-Scott]

We upgraded a few weeks ago to the latest helm chart which looks like it is using ingress controller version 2.0.0-rc3 and Apisix version 3.13.0.

To live with the issue we resorted to a nightly restart of Apisix. I will disable the nightly restart and see if it pops up again.

[Baoyuantop]

If you have any questions, please feel free to give us feedback.

[Baoyuantop]

If there is still a problem, please open it again.

[MarcCain-Scott]

Still a problem, a ApisixRoute failed to install. Error on the apisix pod

2025/08/28 10:37:03 [error] 49#49: *313663 lua entry thread aborted: runtime error: /usr/local/apisix//deps/share/lua/5.1/jsonschema.lua:46: attempt to call field 'find' (a nil value)
stack traceback:
coroutine 0:
/usr/local/apisix//deps/share/lua/5.1/jsonschema.lua: in function 'custom_match_pattern'
[string "jsonschema:anonymous"]:59: in function 'var_0_5'
[string "jsonschema:anonymous"]:77: in function 'var_0_4'
[string "jsonschema:anonymous"]:2119: in function 'check'
/usr/local/apisix/apisix/admin/services.lua:30: in function 'checker'
/usr/local/apisix/apisix/admin/resource.lua:126: in function 'check_conf'
/usr/local/apisix/apisix/admin/resource.lua:241: in function </usr/local/apisix/apisix/admin/resource.lua:228>
/usr/local/apisix/apisix/admin/init.lua:234: in function 'handler'
/usr/local/apisix//deps/share/lua/5.1/resty/radixtree.lua:1013: in function 'dispatch'
/usr/local/apisix/apisix/init.lua:1032: in function 'http_admin'
content_by_lua(nginx.conf:250):2: in main chunk, client: 10.42.0.237, server: , request: "PUT /apisix/admin/services/46615ce3 HTTP/1.1", host: "apisix-admin.default:9180"

Error message on the ApisixRoute status
Err: failed to handle adc output: failed to parse adc result: json: cannot unmarshal string into Go struct field ResponseDetails.failed.response.data of type adc.ResponseData'

Restarting the apisix pod and then everything works fine and the new route is created.

[MarcCain-Scott]

I don't have permissions to re-open this but I am running the latest version and this is still happening, although not as often as with the older version.