[string "scripts/components/grottowaterfallsoundcont..."]:44: attempt to index local 'pool2' (a nil value)

[00:39:44]: [string "scripts/components/grottowaterfallsoundcont..."]:44: attempt to index local 'pool2' (a nil value)
LUA ERROR stack traceback:
scripts/components/grottowaterfallsoundcontroller.lua:44 in () ? (Lua) <43-45>
   pool1 = table: 5DA56BF8
   pool2 = nil
=[C]:-1 in (field) sort (C) <-1--1>
scripts/components/grottowaterfallsoundcontroller.lua:66 in (upvalue) get_pools_close_to_player_dsqsorted (Lua) <49-69>
   px = -520
   py = 0
   pz = 485
   pools_with_dist = table: 5DA56C20
scripts/components/grottowaterfallsoundcontroller.lua:125 in (field) fn (Lua) <117-155>
scripts/scheduler.lua:177 in (method) OnTick (Lua) <155-207>
   self =
      running = table: 1A98E058
      waitingfortick = table: 1A98DFE0
      tasks = table: 1A98E260
      waking = table: 5DA555C8
      attime = table: 1A98E0A8
      hibernating = table: 1A98E1E8
   tick = 3304
   k = PERIODIC 100027: 0.166667
   v = true
   already_dead = nil
scripts/scheduler.lua:371 in (global) RunScheduler (Lua) <369-377>
   tick = 3304
scripts/update.lua:185 in () ? (Lua) <164-243>
   dt = 0.033333335071802
   tick = 3304
   i = 3304

[00:39:44]: [string "scripts/components/grottowaterfallsoundcont..."]:44: attempt to index local 'pool2' (a nil value)
LUA ERROR stack traceback:
    scripts/components/grottowaterfallsoundcontroller.lua:44 in () ? (Lua) <43-45>
    =[C]:-1 in (field) sort (C) <-1--1>
    scripts/components/grottowaterfallsoundcontroller.lua:66 in (upvalue) get_pools_close_to_player_dsqsorted (Lua) <49-69>
    scripts/components/grottowaterfallsoundcontroller.lua:125 in (field) fn (Lua) <117-155>
    scripts/scheduler.lua:177 in (method) OnTick (Lua) <155-207>
    scripts/scheduler.lua:371 in (global) RunScheduler (Lua) <369-377>
    scripts/update.lua:185 in () ? (Lua) <164-243>