openresty got warnning message like :
2022/03/04 09:37:52 [warn] 13025#13025: *37 [lua] _G write guard:12: writing a global Lua variable ('lfs') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables
stack traceback:
[C]: at 0x7fbb0d0dda20
[C]: in function 'require'
lua code:
local lfs=require("lfs") lfs.xxxxxx
openresty got warnning message like : 2022/03/04 09:37:52 [warn] 13025#13025: *37 [lua] _G write guard:12: writing a global Lua variable ('lfs') which may lead to race conditions between concurrent requests, so prefer the use of 'local' variables stack traceback: [C]: at 0x7fbb0d0dda20 [C]: in function 'require'