zuiyangqingzhou opened a new issue, #6887:
URL: https://github.com/apache/apisix/issues/6887
### Current Behavior
server-info plugin error occurred when report info
### Expected Behavior
_No response_
### Error Logs
```
2022/04/20 03:33:58 [warn] 17703#17703: *757946 [lua] v3.lua:151:
keepalive(): invalid response code: 503. Retrying, context: ngx.timer
2022/04/20 03:34:06 [warn] 17703#17703: *757946 [lua] v3.lua:151:
keepalive(): invalid response code: 503. Retrying, context: ngx.timer
2022/04/20 03:34:14 [warn] 17703#17703: *757946 [lua] v3.lua:151:
keepalive(): invalid response code: 503. Retrying, context: ngx.timer
2022/04/20 03:34:22 [warn] 17703#17703: *757946 [lua] v3.lua:151:
keepalive(): invalid response code: 503. Retrying, context: ngx.timer
2022/04/20 03:34:22 [error] 17703#17703: *757946 lua user thread aborted:
runtime error: ...er_v2.1.0_20220420//deps/share/lua/5.1/resty/etcd/v3.lua:158:
attempt to index local 'res' (a nil value)
stack traceback:
coroutine 0:
...er_v2.1.0_20220420//deps/share/lua/5.1/resty/etcd/v3.lua: in
function 'keepalive'
...ffic-gateway/master_v2.1.0_20220420/apisix/core/etcd.lua:370: in
function 'keepalive'
...ay/master_v2.1.0_20220420/apisix/plugins/server-info.lua:217: in
function 'report'
...ay/master_v2.1.0_20220420/apisix/plugins/server-info.lua:279: in
function <...ay/master_v2.1.0_20220420/apisix/plugins/server-info.lua:274>
coroutine 1:
[C]: in function 'thread_wait'
...traffic-gateway/master_v2.1.0_20220420/apisix/timers.lua:52: in
function <...traffic-gateway/master_v2.1.0_20220420/apisix/timers.lua:32>
[C]: in function 'pcall'
...fic-gateway/master_v2.1.0_20220420/apisix/core/timer.lua:35: in
function <...fic-gateway/master_v2.1.0_20220420/apisix/core/timer.lua:31>
[C]: in function 'pcall'
...fic-gateway/master_v2.1.0_20220420/apisix/core/timer.lua:58: in
function <...fic-gateway/master_v2.1.0_20220420/apisix/core/timer.lua:51>,
context: ngx.timer
2022/04/20 03:34:22 [error] 17703#17703: *757946 [lua] timer.lua:37: failed
to run the timer: background err:
...traffic-gateway/master_v2.1.0_20220420/apisix/timers.lua:54: bad argument #2
to 'error' (expected table to have __tostring metamethod), context: ngx.timer
```
### Steps to Reproduce
none
### Environment
- APISIX version (run `apisix version`): 2.10.5
- Operating system (run `uname -a`): x86_64 GNU/Linux
- OpenResty / Nginx version (run `openresty -V` or `nginx -V`): nginx
version: openresty/1.19.9.1
- etcd version, if relevant (run `curl
http://127.0.0.1:9090/v1/server_info`): 3.5.0
- APISIX Dashboard version, if relevant:
- Plugin runner version, for issues related to plugin runners:
- LuaRocks version, for installation issues (run `luarocks --version`):
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