Server crashes when bringing an animal out of the nether - Ububtu version

Below is the crash report. This happened twice--once with a dog and once with a cow.

CrashReporter Key: 8c4937c1-64cb-3532-a8dc-1deb28f67293

Crash
[2020-10-11 15:07:15 INFO] at GoalSelectorComponent::onPlayerDimensionChanged[Player*, AutomaticID<Dimension, int>] (UnknownFile:?)
at Mob::onPlayerDimensionChanged[Player*, AutomaticID<Dimension, int>] (UnknownFile:?)
at Player::fireDimensionChangedEvent[AutomaticID<Dimension, int>] (UnknownFile:?)
at Level::_handleChangeDimensionRequests[] (UnknownFile:?)
at Level::requestPlayerChangeDimension[Player&, std::unique_ptr<ChangeDimensionRequest, std::default_delete<ChangeDimensionRequest> >] (UnknownFile:?)
at ServerPlayer::changeDimension[AutomaticID<Dimension, int>, bool] (UnknownFile:?)
at Actor::updateInsideBlock[] (UnknownFile:?)
at Actor::baseTick[] (UnknownFile:?)
at Mob::baseTick[] (UnknownFile:?)
at Actor::normalTick[] (UnknownFile:?)
at Mob::normalTick[] (UnknownFile:?)
at Player::normalTick[] (UnknownFile:?)
at ServerPlayer::normalTick[] (UnknownFile:?)
at Actor::tick[BlockSource&] (UnknownFile:?)
at Player::tickWorld[Tick const&] (UnknownFile:?)
at ServerPlayer::tickWorld[Tick const&] (UnknownFile:?)
at std::function<bool [Player&]>::operator[][Player&] const (UnknownFile:?)
at Level::forEachPlayer[std::function<bool [Player&]>] (UnknownFile:?)
at Level::tick[] (UnknownFile:?)
at ServerLevel::tick[] (UnknownFile:?)
at GameSession::tick[] (UnknownFile:?)
at Minecraft::tickSimtime[int, int] (UnknownFile:?)
at Minecraft::update[] (UnknownFile:?)
at ServerInstance::_update[] (UnknownFile:?)
at clone (UnknownFile:?)
a4066603-4504-45e8-8971-5403b0342212