suryaparua-official opened a new pull request, #13358:
URL: https://github.com/apache/apisix/pull/13358
## Summary
Fixes #13357
## Changes
In `apisix/plugins/limit-count/init.lua` at line 262, the `error()`
function was called with incorrect arguments:
```lua
-- Before (wrong)
error("failed to generate key invalid parent: ", core.json.encode(parent))
-- After (correct)
error("failed to generate key invalid parent: " .. core.json.encode(parent))
```
Lua's `error(message, level)` expects the second argument to be an
integer (stack level: 0, 1, or 2), not a string. The previous code
would cause LuaJIT to raise:
> bad argument #2 to 'error' (number expected, got string)
## Test
Added a test case in `t/plugin/limit-count5.t` to verify the error
message is correct when `_meta.parent` is missing.
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