The server cannot be started

I tried moving the existing server to the beta branch and running it there, but it still won’t start.
This method usually worked during beta testing, but not this time.
I found this error in the cave log file.

[00:00:25]: [string "scripts/components/vaultroommanager.lua"]:268: attempt to index local 'marker' (a nil value)
LUA ERROR stack traceback:
    scripts/components/vaultroommanager.lua:268 in (method) CreateTeleporter (Lua) <266-286>
    scripts/components/vaultroommanager.lua:534 in (method) GetLobbyToVaultTeleporter (Lua) <531-539>
    scripts/components/vaultroommanager.lua:207 in (method) OnArchivesPowered (Lua) <205-209>
    scripts/components/vaultroommanager.lua:202 in (local) fn (Lua) <202-202>
    scripts/entityscript.lua:1298 in (method) PushEvent_Internal (Lua) <1285-1314>
    scripts/entityscript.lua:1317 in (method) PushEvent (Lua) <1316-1318>
    scripts/components/archivemanager.lua:38 in (method) SwitchPowerOn (Lua) <34-44>
    scripts/prefabs/archive_props.lua:670 in (upvalue) checkforgems (Lua) <657-680>
    scripts/prefabs/archive_props.lua:694 in (upvalue) OnGemGiven (Lua) <682-707>
    scripts/prefabs/archive_props.lua:761 in (method) OnLoadPostPass (Lua) <751-767>
    scripts/entityscript.lua:1949 in (method) LoadPostPass (Lua) <1938-1951>
    scripts/gamelogic.lua:636 in (upvalue) PopulateWorld (Lua) <368-664>