Watch Item Location

[vin-spiegel]

function a()
    print(nilTable.nilValue)
end

function b()
    a()
end

function c()
    b()
end

c()

I don't know from which line it was called. null value is entered in Location.

stack traceback:
        103:8:123:a:(null):(null) location: 2
        118:6:135:b:(null):(null) location: null
        130:4:140:c:(null):(null) location: null
        91:2:-1:(null):(null):(null) location: null