Current Behavior

Newly installed apisix cluster throws following exception:

2023/01/10 10:03:19 [error] 54#54: *1312995 [lua] config_etcd.lua:662: failed to fetch data from etcd: /usr/local/apisix/apisix/core/config_util.lua:99: attempt to index local 'item' (a boolean value)
stack traceback:
        /usr/local/apisix/apisix/core/config_util.lua:99: in function 'fire_all_clean_handlers'
        /usr/local/apisix/apisix/core/config_etcd.lua:379: in function 'sync_data'
        /usr/local/apisix/apisix/core/config_etcd.lua:609: in function </usr/local/apisix/apisix/core/config_etcd.lua:599>
        [C]: in function 'xpcall'
        /usr/local/apisix/apisix/core/config_etcd.lua:599: in function </usr/local/apisix/apisix/core/config_etcd.lua:577>,  etcd key: /apisix/routes, context: ngx.timer

Expected Behavior

Running without former issue.

Error Logs

2023/01/10 10:06:21 [error] 48#48: *1334880 [lua] config_etcd.lua:662: failed to fetch data from etcd: /usr/local/apisix/apisix/core/config_util.lua:99: attempt to index local 'item' (a boolean value)
stack traceback:
/usr/local/apisix/apisix/core/config_util.lua:99: in function 'fire_all_clean_handlers'
/usr/local/apisix/apisix/core/config_etcd.lua:379: in function 'sync_data'
/usr/local/apisix/apisix/core/config_etcd.lua:609: in function </usr/local/apisix/apisix/core/config_etcd.lua:599>
[C]: in function 'xpcall'
/usr/local/apisix/apisix/core/config_etcd.lua:599: in function </usr/local/apisix/apisix/core/config_etcd.lua:577>, etcd key: /apisix/routes, context: ngx.timer
2023/01/10 10:06:21 [error] 50#50: *1334917 [lua] config_etcd.lua:662: failed to fetch data from etcd: /usr/local/apisix/apisix/core/config_util.lua:99: attempt to index local 'item' (a boolean value)
stack traceback:
/usr/local/apisix/apisix/core/config_util.lua:99: in function 'fire_all_clean_handlers'
/usr/local/apisix/apisix/core/config_etcd.lua:379: in function 'sync_data'
/usr/local/apisix/apisix/core/config_etcd.lua:609: in function </usr/local/apisix/apisix/core/config_etcd.lua:599>
[C]: in function 'xpcall'
/usr/local/apisix/apisix/core/config_etcd.lua:599: in function </usr/local/apisix/apisix/core/config_etcd.lua:577>, etcd key: /apisix/routes, context: ngx.timer
2023/01/10 10:06:22 [error] 56#56: *1334983 [lua] config_etcd.lua:662: failed to fetch data from etcd: /usr/local/apisix/apisix/core/config_util.lua:99: attempt to index local 'item' (a boolean value)
stack traceback:
/usr/local/apisix/apisix/core/config_util.lua:99: in function 'fire_all_clean_handlers'
/usr/local/apisix/apisix/core/config_etcd.lua:379: in function 'sync_data'
/usr/local/apisix/apisix/core/config_etcd.lua:609: in function </usr/local/apisix/apisix/core/config_etcd.lua:599>
[C]: in function 'xpcall'
/usr/local/apisix/apisix/core/config_etcd.lua:599: in function </usr/local/apisix/apisix/core/config_etcd.lua:577>, etcd key: /apisix/routes, context: ngx.timer

Steps to Reproduce

1. Install apisix cluster with following images: apache/apisix:3.1.0-debian
2. Running at least 4 hours;
3. Not sure this issue will be throwed as previous.

Environment

• APISIX version (run apisix version): 3.1.0 (3.1.0-debian official docker image)
• Operating system (run uname -a): Linux apisix-v3-0-58d694d79d-8567j 4.4.0-210-generic update the doc of https for Chinese version. #242-Ubuntu SMP Fri Apr 16 09:57:56 UTC 2021 x86_64 GNU/Linux
• OpenResty / Nginx version (run openresty -V or nginx -V): nginx version: openresty/1.21.4.1
• etcd version, if relevant (run curl http://127.0.0.1:9090/v1/server_info): {"boot_time":1672910773,"etcd_version":"3.4.0","hostname":"apisix-v3-0-58d694d79d-8567j","version":"3.1.0","id":"c978a662-9041-4e7b-9a4d-d5bea6ef32f9"}
• APISIX Dashboard version, if relevant:
• Plugin runner version, for issues related to plugin runners:
• LuaRocks version, for installation issues (run luarocks --version):