nginx: [error] lua_load_resty_core failed to load the resty.core module from https://github.com/openresty/lua-resty-core; ensure you are using an OpenResty release from https://openresty.org/en/download.html (rc: 2, reason: module 'resty.core' not found:
no field package.preload['resty.core']
no file '../lua-resty-core/lib/resty/core.lua'
no file '../lua-resty-lrucache/lib/resty/core.lua'
no file './resty/core.lua'
no file '/usr/local/share/luajit-2.1.0-beta3/resty/core.lua'
no file '/usr/local/share/lua/5.1/resty/core.lua'
no file '/usr/local/share/lua/5.1/resty/core/init.lua'