bahasa Finlandia: Lua error in Modul:parameters at line 146: attempt to call upvalue 'num_keys' (a nil value).
bahasa Prancis: Lua error in Modul:parameters at line 146: attempt to call upvalue 'num_keys' (a nil value)., Lua error in Modul:parameters at line 146: attempt to call upvalue 'num_keys' (a nil value)., Lua error in Modul:parameters at line 146: attempt to call upvalue 'num_keys' (a nil value).
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