Over the past three days, when leaving the nether through one of our portals, there have been intermittent crashes where the entire BDE server goes down and needs to be restarted. I was tailing the console output from the screen session when the crash occurred, since it gets lost otherwise. 

NO LOG FILE! - setting up server logging...
[2019-12-31 15:32:02 INFO] Starting Server
[2019-12-31 15:32:02 INFO] Version 1.14.1.4
[2019-12-31 15:32:02 INFO] Session ID a29be5b1-8b50-46b5-8cb4-841e3df6319e
[2019-12-31 15:32:02 INFO] Level Name: Bedrock level
[2019-12-31 15:32:02 INFO] Game mode: 0 Survival
[2019-12-31 15:32:02 INFO] Difficulty: 2 NORMAL
[2019-12-31 15:32:04 INFO] IPv4 supported, port: 19132
[2019-12-31 15:32:04 INFO] IPv6 supported, port: 19133
[2019-12-31 15:32:04 INFO] IPv4 supported, port: 59891
[2019-12-31 15:32:04 INFO] IPv6 supported, port: 41793
[2019-12-31 15:32:05 INFO] Server started.
[2019-12-31 15:32:58 INFO] Player connected: Dru1d13, xuid: 2535463668235365
[2019-12-31 19:07:11 INFO] Package: com.mojang.minecraft.dedicatedserver
Version: 1.14.1.4
OS: Linux
Server start: 2019-12-31 15:32:02 EST
Dmp timestamp: 2019-12-31 19:07:11 EST
Upload Date: 2019-12-31 19:07:11 EST
Session ID: a29be5b1-8b50-46b5-8cb4-841e3df6319e
Commit hash:
Build id: development
CrashReporter Key: 8c4937c1-64cb-3532-a8dc-1deb28f67293

Crash
[2019-12-31 19:07:11 INFO] at ChunkSource::getAvailableChunk[ChunkPos const&] (UnknownFile:?)
at BlockSource::getChunk[ChunkPos const&] const (UnknownFile:?)
at BlockSource::getBlock[BlockPos const&] const (UnknownFile:?)
at BlockSource::containsMaterial[AABB const&, MaterialType] (UnknownFile:?)
at Actor::isInLava[] const (UnknownFile:?)
at NavigationUtility::isInLiquid[Mob const&] (UnknownFile:?)
at FloatGoal::canUse[] (UnknownFile:?)
at GoalSelectorUtility::tryStartGoals[std::vector<PrioritizedGoal, std::allocator<PrioritizedGoal> >&] (UnknownF
ile:?)
at GoalSelectorSystem::_tickGoalSelectorComponent[ViewedEntityContextT<EntityContext, FlagComponent<ActorTickedF
lag>, ActorComponent, GoalSelectorComponent>&] (UnknownFile:?)
at void EntityRegistryBase::View<EntityContext, EntityRegistry, FlagComponent<ActorTickedFlag>, ActorComponent,
GoalSelectorComponent>::_invokeHelper<void [*][ViewedEntityContextT<EntityContext, FlagComponent<ActorTickedFlag>, Actor
Component, GoalSelectorComponent>&], ViewedEntityContextT<EntityContext, FlagComponent<ActorTickedFlag>, ActorComponent,
GoalSelectorComponent>&>[void [*][ViewedEntityContextT<EntityContext, FlagComponent<ActorTickedFlag>, ActorComponent, G
oalSelectorComponent>&], ViewedEntityContextT<EntityContext, FlagComponent<ActorTickedFlag>, ActorComponent, GoalSelecto
rComponent>&] (UnknownFile:?)
at void EntityRegistryBase::View<EntityContext, EntityRegistry, FlagComponent<ActorTickedFlag>, ActorComponent,
GoalSelectorComponent>::_each<true, void [*][ViewedEntityContextT<EntityContext, FlagComponent<ActorTickedFlag>, ActorCo
mponent, GoalSelectorComponent>&]>[void [*][ViewedEntityContextT<EntityContext, FlagComponent<ActorTickedFlag>, ActorCom
ponent, GoalSelectorComponent>&]] (UnknownFile:?)
at void EntityRegistryBase::View<EntityContext, EntityRegistry, FlagComponent<ActorTickedFlag>, ActorComponent,
GoalSelectorComponent>::each<void [*][ViewedEntityContextT<EntityContext, FlagComponent<ActorTickedFlag>, ActorComponent
, GoalSelectorComponent>&]>[void [*][ViewedEntityContextT<EntityContext, FlagComponent<ActorTickedFlag>, ActorComponent,
worlds/Bedrock level/db/210853.ldb
worlds/Bedrock level/db/209433.ldb
worlds/Bedrock level/db/210416.ldb
worlds/Bedrock level/db/210738.ldb
worlds/Bedrock level/db/210665.ldb
worlds/Bedrock level/db/210730.ldb