Vote crash

An admin issued a 'c_startvote' command for a rollback and Master shard crashed shortly afterwards:

[04:35:07]: [(KU_xxx) EnoliUnQ] ReceiveRemoteExecute(c_startvote("rollback")) @(-344.98, 134.05)
[04:35:07]: [string "scripts/components/worldvoter.lua"]:328: calling 'GetClientTableForUser' on bad self (string expected, got nil)
LUA ERROR stack traceback:
=[C]:-1 in (method) GetClientTableForUser (C) <-1--1>
scripts/components/worldvoter.lua:328 in (local) fn (Lua) <322-356>
   src = 100028 - world (valid:true)
   data = table: 0x6c9a22e0
scripts/entityscript.lua:1120 in (method) PushEvent (Lua) <1107-1134>
   scripts/entityscript.lua:1120 in (method) PushEvent (Lua) <1107-1134>
   self (valid:true) =
      GUID = 100028
      inlimbo = false
      squidtask = PERIODIC 100028: 46.558235
      Pathfinder = Pathfinder (0x50b2cf90)
      worldstatewatching = table: 0x4df0c0d0
      spawntask = function - scripts/components/squidspawner.lua:139
      worldprefab = forest
      spawnwaveyjones = function - scripts/components/shadowhandspawner.lua:274
      ismastershard = true
      shard = 100074 - shard_network (valid:true)
      net = 100073 - forest_network (valid:true)
      pendingtasks = table: 0x6866e670
      hideminimap = false
      state = table: 0x1b367360
      name = The World
      removewaveyjonestarget = function - scripts/components/shadowhandspawner.lua:268
      generated = table: 0x5b3a27b0
      event_listening = table: 0x2fe467d0
      checkwaveyjonestarget = function - scripts/components/shadowhandspawner.lua:258
      minimap = 100029 - minimap (valid:true)
      OnRemoveEntity = function - scripts/prefabs/world.lua:301
      lower_components_shadow = table: 0x37ea01b0
      spawntime = 0
      reservewaveyjonestarget = function - scripts/components/shadowhandspawner.lua:264
      has_ocean = true
      shadetiles = table: 0x80ff0d0
      prefab = world
      updatecomponents = table: 0x3c552f40
      Map = Map (0x36c3ce90)
      PostInit = function - scripts/prefabs/world.lua:279
      shadetile_key_to_leaf_canopy_id = table: 0x28d80210
      persists = false
      meta = table: 0x75e1caf0
      Transform = Transform (0x9ef84c0)
      SoundEmitter = SoundEmitter (0x272b8e40)
      entity = Entity (0x20fc45e0)
      event_listeners = table: 0x57eab190
      ismastersim = true
      GroundCreep = GroundCreep (0x64fe8130)
      WaveComponent = WaveComponent (0x2233bd80)
      replica = table: 0x25ca1a40
      topology = table: 0x6ca370a0
      components = table: 0x1abfdba0
      actioncomponents = table: 0x3b0c2cc0
   event = ms_startvote
   data = table: 0x6c9a22e0
   listeners = table: 0x53e09200
   tocall = table: 0x48c4d2f0
   i = 1
   fn = function - scripts/components/worldvoter.lua:322
scripts/shardnetworking.lua:91 in () ? (Lua) <89-97>
   command_id = 2092076484
   starter_id = nil
   target_id = nil
=[C]:-1 in (method) StartVote (C) <-1--1>
scripts/consolecommands.lua:1265 in (global) c_startvote (Lua) <1255-1266>
   commandname = rollback
   playeroruserid = nil
   userid = nil
c_startvote("rollback"):1 in () ? (main) <0-0>
=[C]:-1 in (global) pcall (C) <-1--1>
scripts/mainfunctions.lua:1890 in () ? (Lua) <1882-1899>
   fnstr = c_startvote("rollback")
   guid = 190973
   x = -344.97839355469
   z = 134.05390930176
   saved_ThePlayer = nil
	[04:35:08]: [string "scripts/components/worldvoter.lua"]:328: calling 'GetClientTableForUser' on bad self (string expected, got nil)
LUA ERROR stack traceback:
    =[C]:-1 in (method) GetClientTableForUser (C) <-1--1>
    scripts/components/worldvoter.lua:328 in (local) fn (Lua) <322-356>
    scripts/entityscript.lua:1120 in (method) PushEvent (Lua) <1107-1134>
    scripts/shardnetworking.lua:91 in () ? (Lua) <89-97>
    =[C]:-1 in (method) StartVote (C) <-1--1>
    scripts/consolecommands.lua:1265 in (global) c_startvote (Lua) <1255-1266>
    c_startvote("rollback"):1 in () ? (main) <0-0>
    =[C]:-1 in (global) pcall (C) <-1--1>
    scripts/mainfunctions.lua:1890 in () ? (Lua) <1882-1899>

Running game version 496354 on a Linux server.