Warning on global variable usages

[gurumark]

Hi,
I get the following warnings when the debug is turned on:

today at 11:20 AM 2020/03/17 15:20:44 [warn] 13#13: *34 [lua] _G write guard:12: __newindex(): writing a global lua variable ('formatTarget') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
today at 11:20 AM stack traceback:
today at 11:20 AM /usr/local/openresty/nginx/lualib/router.lua:12: in main chunk, client: 207.46.13.223, server: , request: "GET / HTTP/1.1", host: "wpworkplace.com"
today at 11:20 AM 2020/03/17 15:20:44 [warn] 13#13: *34 [lua] _G write guard:12: __newindex(): writing a global lua variable ('redirect') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
today at 11:20 AM stack traceback:
today at 11:20 AM /usr/local/openresty/nginx/lualib/router.lua:19: in main chunk, client: 207.46.13.223, server: , request: "GET / HTTP/1.1", host: "wpworkplace.com"
today at 11:20 AM 2020/03/17 15:20:44 [warn] 13#13: *34 [lua] _G write guard:12: __newindex(): writing a global lua variable ('proxy') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
today at 11:20 AM stack traceback:
today at 11:20 AM /usr/local/openresty/nginx/lualib/router.lua:24: in main chunk, client: 207.46.13.223, server: , request: "GET / HTTP/1.1", host: "wpworkplace.com"
today at 11:20 AM 2020/03/17 15:20:44 [warn] 13#13: *34 [lua] _G write guard:12: __newindex(): writing a global lua variable ('routeRequest') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
today at 11:20 AM stack traceback:
today at 11:20 AM /usr/local/openresty/nginx/lualib/router.lua:29: in main chunk, client: 207.46.13.223, server: , request: "GET / HTTP/1.1", host: "wpworkplace.com"
today at 11:20 AM 207.46.13.223 - - [17/Mar/2020:15:20:44 +0000] "GET / HTTP/1.1" 301 175 "-" "Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)"
today at 11:20 AM 2020/03/17 15:20:44 [info] 13#13: *34 client 207.46.13.223 closed keepalive connection
today at 11:22 AM 2020/03/17 15:22:03 [warn] 13#13: *36 [lua] _G write guard:12: __newindex(): writing a global lua variable ('starts_with') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
today at 11:22 AM stack traceback:
today at 11:22 AM /usr/local/openresty/nginx/lualib/ceryx/utils.lua:3: in main chunk
today at 11:22 AM [C]: in function 'require'
today at 11:22 AM /usr/local/openresty/nginx/lualib/ceryx/redis.lua:2: in main chunk
today at 11:22 AM [C]: in function 'require'
today at 11:22 AM /usr/local/openresty/nginx/lualib/router.lua:1: in main chunk, client: 10.0.0.3, server: , request: "POST /wp-admin/admin-ajax.php HTTP/1.1", host: "blogwp.com", referrer: "http://blogwp.com/wp-admin/admin.php?page=intrapress_settings"
today at 11:22 AM 2020/03/17 15:22:03 [warn] 13#13: *36 [lua] _G write guard:12: __newindex(): writing a global lua variable ('ends_with') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
today at 11:22 AM stack traceback:
today at 11:22 AM /usr/local/openresty/nginx/lualib/ceryx/utils.lua:7: in main chunk
today at 11:22 AM [C]: in function 'require'
today at 11:22 AM /usr/local/openresty/nginx/lualib/ceryx/redis.lua:2: in main chunk
today at 11:22 AM [C]: in function 'require'
today at 11:22 AM /usr/local/openresty/nginx/lualib/router.lua:1: in main chunk, client: 10.0.0.3, server: , request: "POST /wp-admin/admin-ajax.php HTTP/1.1", host: "blogwp.com", referrer: "http://blogwp.com/wp-admin/admin.php?page=intrapress_settings"
today at 11:22 AM 2020/03/17 15:22:03 [warn] 13#13: *36 [lua] _G write guard:12: __newindex(): writing a global lua variable ('starts_with_protocol') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
today at 11:22 AM stack traceback:
today at 11:22 AM /usr/local/openresty/nginx/lualib/ceryx/utils.lua:11: in main chunk
today at 11:22 AM [C]: in function 'require'
today at 11:22 AM /usr/local/openresty/nginx/lualib/ceryx/redis.lua:2: in main chunk
today at 11:22 AM [C]: in function 'require'
today at 11:22 AM /usr/local/openresty/nginx/lualib/router.lua:1: in main chunk, client: 10.0.0.3, server: , request: "POST /wp-admin/admin-ajax.php HTTP/1.1", host: "blogwp.com", referrer: "http://blogwp.com/wp-admin/admin.php?page=intrapress_settings"
today at 11:22 AM 2020/03/17 15:22:03 [warn] 13#13: *36 [lua] _G write guard:12: __newindex(): writing a global lua variable ('has_trailing_slash') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
today at 11:22 AM stack traceback:
today at 11:22 AM /usr/local/openresty/nginx/lualib/ceryx/utils.lua:15: in main chunk
today at 11:22 AM [C]: in function 'require'
today at 11:22 AM /usr/local/openresty/nginx/lualib/ceryx/redis.lua:2: in main chunk
today at 11:22 AM [C]: in function 'require'
today at 11:22 AM /usr/local/openresty/nginx/lualib/router.lua:1: in main chunk, client: 10.0.0.3, server: , request: "POST /wp-admin/admin-ajax.php HTTP/1.1", host: "blogwp.com", referrer: "http://blogwp.com/wp-admin/admin.php?page=intrapress_settings"
today at 11:22 AM 2020/03/17 15:22:03 [warn] 13#13: *36 [lua] _G write guard:12: __newindex(): writing a global lua variable ('getRouteKeyForSource') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
today at 11:22 AM stack traceback:
today at 11:22 AM /usr/local/openresty/nginx/lualib/ceryx/routes.lua:5: in main chunk
today at 11:22 AM [C]: in function 'require'
today at 11:22 AM /usr/local/openresty/nginx/lualib/router.lua:2: in main chunk, client: 10.0.0.3, server: , request: "POST /wp-admin/admin-ajax.php HTTP/1.1", host: "blogwp.com", referrer: "http://blogwp.com/wp-admin/admin.php?page=intrapress_settings"
today at 11:22 AM 2020/03/17 15:22:03 [warn] 13#13: *36 [lua] _G write guard:12: __newindex(): writing a global lua variable ('getSettingsKeyForSource') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
today at 11:22 AM stack traceback:
today at 11:22 AM /usr/local/openresty/nginx/lualib/ceryx/routes.lua:9: in main chunk
today at 11:22 AM [C]: in function 'require'
today at 11:22 AM /usr/local/openresty/nginx/lualib/router.lua:2: in main chunk, client: 10.0.0.3, server: , request: "POST /wp-admin/admin-ajax.php HTTP/1.1", host: "blogwp.com", referrer: "http://blogwp.com/wp-admin/admin.php?page=intrapress_settings"
today at 11:22 AM 2020/03/17 15:22:03 [warn] 13#13: *36 [lua] _G write guard:12: __newindex(): writing a global lua variable ('targetIsInValid') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
today at 11:22 AM stack traceback:
today at 11:22 AM /usr/local/openresty/nginx/lualib/ceryx/routes.lua:13: in main chunk
today at 11:22 AM [C]: in function 'require'
today at 11:22 AM /usr/local/openresty/nginx/lualib/router.lua:2: in main chunk, client: 10.0.0.3, server: , request: "POST /wp-admin/admin-ajax.php HTTP/1.1", host: "blogwp.com", referrer: "http://blogwp.com/wp-admin/admin.php?page=intrapress_settings"
today at 11:22 AM 2020/03/17 15:22:03 [warn] 13#13: *36 [lua] _G write guard:12: __newindex(): writing a global lua variable ('getTargetForSource') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
today at 11:22 AM stack traceback:
today at 11:22 AM /usr/local/openresty/nginx/lualib/ceryx/routes.lua:17: in main chunk
today at 11:22 AM [C]: in function 'require'
today at 11:22 AM /usr/local/openresty/nginx/lualib/router.lua:2: in main chunk, client: 10.0.0.3, server: , request: "POST /wp-admin/admin-ajax.php HTTP/1.1", host: "blogwp.com", referrer: "http://blogwp.com/wp-admin/admin.php?page=intrapress_settings"
today at 11:22 AM 2020/03/17 15:22:03 [warn] 13#13: *36 [lua] _G write guard:12: __newindex(): writing a global lua variable ('getModeForSource') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
today at 11:22 AM stack traceback:
today at 11:22 AM /usr/local/openresty/nginx/lualib/ceryx/routes.lua:40: in main chunk
today at 11:22 AM [C]: in function 'require'
today at 11:22 AM /usr/local/openresty/nginx/lualib/router.lua:2: in main chunk, client: 10.0.0.3, server: , request: "POST /wp-admin/admin-ajax.php HTTP/1.1", host: "blogwp.com", referrer: "http://blogwp.com/wp-admin/admin.php?page=intrapress_settings"
today at 11:22 AM 2020/03/17 15:22:03 [warn] 13#13: *36 [lua] _G write guard:12: __newindex(): writing a global lua variable ('getRouteForSource') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
today at 11:22 AM stack traceback:
today at 11:22 AM /usr/local/openresty/nginx/lualib/ceryx/routes.lua:52: in main chunk
today at 11:22 AM [C]: in function 'require'
today at 11:22 AM /usr/local/openresty/nginx/lualib/router.lua:2: in main chunk, client: 10.0.0.3, server: , request: "POST /wp-admin/admin-ajax.php HTTP/1.1", host: "blogwp.com", referrer: "http://blogwp.com/wp-admin/admin.php?page=intrapress_settings"
today at 11:22 AM 2020/03/17 15:22:03 [debug] 13#13: *36 [lua] redis.lua:14: client(): Preparing Redis client.
today at 11:22 AM 2020/03/17 15:22:03 [debug] 13#13: *36 [lua] redis.lua:27: client(): Redis client prepared.
today at 11:22 AM 2020/03/17 15:22:03 [debug] 13#13: *36 [lua] redis.lua:37: client(): Authenticated with Redis.
today at 11:22 AM 2020/03/17 15:22:03 [warn] 13#13: *36 [lua] _G write guard:12: __newindex(): writing a global lua variable ('formatTarget') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
today at 11:22 AM stack traceback:
today at 11:22 AM /usr/local/openresty/nginx/lualib/router.lua:12: in main chunk, client: 10.0.0.3, server: , request: "POST /wp-admin/admin-ajax.php HTTP/1.1", host: "blogwp.com", referrer: "http://blogwp.com/wp-admin/admin.php?page=intrapress_settings"
today at 11:22 AM 2020/03/17 15:22:03 [warn] 13#13: *36 [lua] _G write guard:12: __newindex(): writing a global lua variable ('redirect') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
today at 11:22 AM stack traceback:
today at 11:22 AM /usr/local/openresty/nginx/lualib/router.lua:19: in main chunk, client: 10.0.0.3, server: , request: "POST /wp-admin/admin-ajax.php HTTP/1.1", host: "blogwp.com", referrer: "http://blogwp.com/wp-admin/admin.php?page=intrapress_settings"
today at 11:22 AM 2020/03/17 15:22:03 [warn] 13#13: *36 [lua] _G write guard:12: __newindex(): writing a global lua variable ('proxy') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
today at 11:22 AM stack traceback:
today at 11:22 AM /usr/local/openresty/nginx/lualib/router.lua:24: in main chunk, client: 10.0.0.3, server: , request: "POST /wp-admin/admin-ajax.php HTTP/1.1", host: "blogwp.com", referrer: "http://blogwp.com/wp-admin/admin.php?page=intrapress_settings"
today at 11:22 AM 2020/03/17 15:22:03 [warn] 13#13: *36 [lua] _G write guard:12: __newindex(): writing a global lua variable ('routeRequest') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
today at 11:22 AM stack traceback:

All of these variables need to be declared as local.

Thanks