After reinstall kong by brew, i can not startup kong

[chenyanter]

Summary

After reinstall kong by brew, can not startup kong

Additional Details & Logs

• Kong version 1.2.1
• Kong debug-level startup logs

2019/08/17 17:05:03 [debug] stream_listen = {"off"}
2019/08/17 17:05:03 [debug] trusted_ips = {}
2019/08/17 17:05:03 [debug] upstream_keepalive = 60
2019/08/17 17:05:03 [verbose] prefix in use: /usr/local/opt/kong
2019/08/17 17:05:03 [debug] sending signal to pid at: /usr/local/opt/kong/pids/nginx.pid
2019/08/17 17:05:03 [debug] kill -0 `cat /usr/local/opt/kong/pids/nginx.pid` >/dev/null 2>&1
Error: 
/usr/local/share/lua/5.1/pgmoon/socket.lua:30: attempt to call field 'tcp' (a nil value)
stack traceback:
        /usr/local/share/lua/5.1/pgmoon/socket.lua:30: in function 'tcp'
        /usr/local/share/lua/5.1/pgmoon/socket.lua:95: in function 'new'
        /usr/local/share/lua/5.1/pgmoon/init.lua:673: in function '__init'
        /usr/local/share/lua/5.1/pgmoon/init.lua:697: in function 'new'
        .../share/lua/5.1/kong/db/strategies/postgres/connector.lua:195: in function 'connect'
        .../share/lua/5.1/kong/db/strategies/postgres/connector.lua:484: in function 'query'
        .../share/lua/5.1/kong/db/strategies/postgres/connector.lua:272: in function 'init'
        /usr/local/share/lua/5.1/kong/db/init.lua:125: in function 'init_connector'
        /usr/local/share/lua/5.1/kong/cmd/start.lua:31: in function 'cmd_exec'
        /usr/local/share/lua/5.1/kong/cmd/init.lua:87: in function </usr/local/share/lua/5.1/kong/cmd/init.lua:87>
        [C]: in function 'xpcall'
        /usr/local/share/lua/5.1/kong/cmd/init.lua:87: in function </usr/local/share/lua/5.1/kong/cmd/init.lua:44>
        /usr/local/bin/kong:7: in function 'file_gen'
        init_worker_by_lua:49: in function <init_worker_by_lua:47>
        [C]: in function 'xpcall'
        init_worker_by_lua:56: in function <init_worker_by_lua:54>

[chenyanter]

fix by

brew uninstall kong && brew install kong