Add Scoreboard with Lua - non-table object(nil)

Local Setup
1

Hello there,

I tried to add a scoreboard, but I get the this error:

{"level":"error","ts":"2022-02-03T22:13:39.731+0100","caller":"server/runtime_lua.go:1889","msg":"Could not complete runtime invocation","error":"/nakama/data/modules/birds.lua:8: attempt to index a non-table object(nil) with key 'leaderboard_create'\nstack traceback:\n\t/nakama/data/modules/birds.lua:8: in main chunk\n\t[G]: ?"}
{"level":"error","ts":"2022-02-03T22:13:39.731+0100","caller":"server/runtime.go:592","msg":"Error initialising Lua runtime provider","error":"/nakama/data/modules/birds.lua:8: attempt to index a non-table object(nil) with key 'leaderboard_create'\nstack traceback:\n\t/nakama/data/modules/birds.lua:8: in main chunk\n\t[G]: ?"}
{"level":"fatal","ts":"2022-02-03T22:13:39.731+0100","caller":"v3/main.go:146","msg":"Failed initializing runtime modules","error":"/nakama/data/modules/birds.lua:8: attempt to index a non-table object(nil) with key 'leaderboard_create'\nstack traceback:\n\t/nakama/data/modules/birds.lua:8: in main chunk\n\t[G]: ?"}

I use the example on the documentation site:

This is my code:

1 local id = "birds_4"
 2 local authoritative = false
 3 local sort = "asc"
 4 local operator = "best"
 5 local metadata = {
 6   moves = 0
 7 }
 8 nk.leaderboard_create(id, authoritative, sort, operator, metadata)

Where is my fault?

Thanks

2

Hello @neronekro, welcome to the forum.

I think you’re missing the nakama module import statement at the top of your script:

local nk = require("nakama")

Let me know if it resolves your issue.

3

thx, some kind of stupidy.

However, run into the next error. Maybe it’s also because of the time :slight_smile:

{"level":"error","ts":"2022-02-03T22:39:02.616+0100","caller":"server/runtime_lua.go:1889","msg":"Could not complete runtime invocation","error":"/nakama/data/modules/birds.lua:9: bad argument #5 to leaderboard_create (string expected, got table)\nstack traceback:\n\t[G]: in function 'leaderboard_create'\n\t/nakama/data/modules/birds.lua:9: in main chunk\n\t[G]: ?"}
{"level":"error","ts":"2022-02-03T22:39:02.616+0100","caller":"server/runtime.go:592","msg":"Error initialising Lua runtime provider","error":"/nakama/data/modules/birds.lua:9: bad argument #5 to leaderboard_create (string expected, got table)\nstack traceback:\n\t[G]: in function 'leaderboard_create'\n\t/nakama/data/modules/birds.lua:9: in main chunk\n\t[G]: ?"}
{"level":"fatal","ts":"2022-02-03T22:39:02.616+0100","caller":"v3/main.go:146","msg":"Failed initializing runtime modules","error":"/nakama/data/modules/birds.lua:9: bad argument #5 to leaderboard_create (string expected, got table)\nstack traceback:\n\t[G]: in function 'leaderboard_create'\n\t/nakama/data/modules/birds.lua:9: in main chunk\n\t[G]: ?"}

 1 local nk = require("nakama")
 2 local id = "birds_4"
 3 local authoritative = false
 4 local sort = "asc"
 5 local operator = "best"
 6 local metadata = {
 7   moves = "0"
 8 }
 9 nk.leaderboard_create(id, authoritative, sort, operator, metadata)
4

no problem, as per the following documentation snippet:

local id = "level1"
local authoritative = false
local sort = "desc"
local operator = "best"
local reset = "0 0 * * 1"
local metadata = {
  weather_conditions = "rain"
}
nk.leaderboard_create(id, authoritative, sort, operator, reset, metadata)

the #5 argument expects a cron expression for the reset, if you do not wish for the leaderboard to reset then just pass an empty string ""