note i only had that problem on a specific planet , others tentacle planet i've encounter before was ok.

@Dr_Shadox , the crashlog tells from a Dungeon that couldt be generated, you probably inatslled a dungeon mod without the requirements, or (that happend to me too) a dungeon mod didn't work.
You could try removing the dungeon mods you have installed and warp on the planet (if the dungeon mods only used vanilla assets, it shouldnt break any of your already visited planets. But to be sure, you should clear your galaxy folder and reset your universe, be sure you put every of your valuable items on your ship and in your inventory, as all of your planets will reset/ will be new generated.
Dungeon mods often made my game crash as well, you should avoid using many at the same time, or using none, just to be save.

well yeah i have a dg mod but it never did that before on others planet (even modded).

also my universe is very old (like made after the alpha beta and so on system) so i want to keep it.

I can deal with it , it was mostly for let you know.

[10:54:22.274] [Error] UniverseServer: error during world create: (WorldServerException) Exception encountered initializing world
[0] 7ff69eb3a213 Star::captureStack
[1] 7ff69eb38f9e Star::StarException::StarException
[2] 7ff69eb39088 Star::StarException::StarException
[3] 7ff69f0b04e0 Star::WorldServerException::WorldServerException
[4] 7ff69f4d4a49 `Star::WorldServer::init'::`1'::catch$536
[5] 7ffde0191030
[6] 7ffde0194608 is_exception_typeof
[7] 7ffe204517e6 RtlCaptureContext2
[8] 7ff69f0c6bc1 Star::WorldServer::init
[9] 7ff69f0b03c2 Star::WorldServer::WorldServer
[10] 7ff69efd94f3 std::make_shared<Star::WorldServer,std::shared_ptr<Star::WorldTemplate> & __ptr64,std::shared_ptr<Star::File> >
[11] 7ff69efe1d31 <lambda_755fc2d76450663a5bb16a372c158895>::operator()
[12] 7ff69efcd00f std::_Invoker_functor::_Call<<lambda_755fc2d76450663a5bb16a372c158895> & __ptr64>
[13] 7ff69efd40d6 std::invoke<<lambda_755fc2d76450663a5bb16a372c158895> & __ptr64>
[14] 7ff69efcfbf9 std::_Invoke_ret<std::shared_ptr<Star::WorldServerThread>,<lambda_755fc2d76450663a5bb16a372c158895> & __ptr64>
[15] 7ff69efe5a16 std::_Func_impl<<lambda_755fc2d76450663a5bb16a372c158895>,std::allocator<int>,std::shared_ptr<Star::WorldServerThread> >::_Do_call
[16] 7ff69eed0677 std::_Func_class<std::shared_ptr<Star::SpawnTypeDatabase> >::operator()
[17] 7ff69efe200f <lambda_770d99c769b4950d94783c330804382d>::operator()
[18] 7ff69eb31ce2 Star::WorkerPool::WorkerThread::run
[19] 7ff69eb36d9e Star::ThreadImpl::runThread
[20] 7ffe1e7c7344 BaseThreadInitThunk
[21] 7ffe204026b1 RtlUserThreadStart
Caused by: (DungeonException) Error generating dungeon named 'undergroundmicrodungeons'
[0] 7ff69eb3a213 Star::captureStack
[1] 7ff69eb38f9e Star::StarException::StarException
[2] 7ff69eb39088 Star::StarException::StarException
[3] 7ff69ec4c110 Star::DungeonException::DungeonException
[4] 7ff69f45f696 `Star::DungeonGenerator::generate'::`1'::catch$119
[5] 7ffde0191030
[6] 7ffde0194608 is_exception_typeof
[7] 7ffe204517e6 RtlCaptureContext2
[8] 7ff69ec59cfa Star::DungeonGenerator::generate
[9] 7ff69f0c6bc1 Star::WorldServer::init
[10] 7ff69f0b03c2 Star::WorldServer::WorldServer
[11] 7ff69efd94f3 std::make_shared<Star::WorldServer,std::shared_ptr<Star::WorldTemplate> & __ptr64,std::shared_ptr<Star::File> >
[12] 7ff69efe1d31 <lambda_755fc2d76450663a5bb16a372c158895>::operator()
[13] 7ff69efcd00f std::_Invoker_functor::_Call<<lambda_755fc2d76450663a5bb16a372c158895> & __ptr64>
[14] 7ff69efd40d6 std::invoke<<lambda_755fc2d76450663a5bb16a372c158895> & __ptr64>
[15] 7ff69efcfbf9 std::_Invoke_ret<std::shared_ptr<Star::WorldServerThread>,<lambda_755fc2d76450663a5bb16a372c158895> & __ptr64>
[16] 7ff69efe5a16 std::_Func_impl<<lambda_755fc2d76450663a5bb16a372c158895>,std::allocator<int>,std::shared_ptr<Star::WorldServerThread> >::_Do_call
[17] 7ff69eed0677 std::_Func_class<std::shared_ptr<Star::SpawnTypeDatabase> >::operator()
[18] 7ff69efe200f <lambda_770d99c769b4950d94783c330804382d>::operator()
[19] 7ff69eb31ce2 Star::WorkerPool::WorkerThread::run
[20] 7ff69eb36d9e Star::ThreadImpl::runThread
[21] 7ffe1e7c7344 BaseThreadInitThunk
[22] 7ffe204026b1 RtlUserThreadStart
Caused by: (DungeonException) Invalid ground vs air contraint. Ground at: 56 Air at: 8 Pixels: highest ground:(38, 56) lowest air:(8, 8)
[0] 7ff69eb3a213 Star::captureStack
[1] 7ff69eb38f9e Star::StarException::StarException
[2] 7ff69ec5f691 Star::Dungeon::Part::placementLevelConstraint
[3] 7ff69ec59cfa Star::DungeonGenerator::generate
[4] 7ff69f0c6bc1 Star::WorldServer::init
[5] 7ff69f0b03c2 Star::WorldServer::WorldServer
[6] 7ff69efd94f3 std::make_shared<Star::WorldServer,std::shared_ptr<Star::WorldTemplate> & __ptr64,std::shared_ptr<Star::File> >
[7] 7ff69efe1d31 <lambda_755fc2d76450663a5bb16a372c158895>::operator()
[8] 7ff69efcd00f std::_Invoker_functor::_Call<<lambda_755fc2d76450663a5bb16a372c158895> & __ptr64>
[9] 7ff69efd40d6 std::invoke<<lambda_755fc2d76450663a5bb16a372c158895> & __ptr64>
[10] 7ff69efcfbf9 std::_Invoke_ret<std::shared_ptr<Star::WorldServerThread>,<lambda_755fc2d76450663a5bb16a372c158895> & __ptr64>
[11] 7ff69efe5a16 std::_Func_impl<<lambda_755fc2d76450663a5bb16a372c158895>,std::allocator<int>,std::shared_ptr<Star::WorldServerThread> >::_Do_call
[12] 7ff69eed0677 std::_Func_class<std::shared_ptr<Star::SpawnTypeDatabase> >::operator()
[13] 7ff69efe200f <lambda_770d99c769b4950d94783c330804382d>::operator()
[14] 7ff69eb31ce2 Star::WorkerPool::WorkerThread::run
[15] 7ff69eb36d9e Star::ThreadImpl::runThread
[16] 7ffe1e7c7344 BaseThreadInitThunk
[17] 7ffe204026b1 RtlUserThreadStart
[10:54:22.430] [Info] UniverseServer: Warping player 1 to CelestialWorld:-345932287:-341925512:99213406:2
[10:54:22.430] [Info] UniverseServer: Warping player 1 failed, invalid world 'CelestialWorld:-345932287:-341925512:99213406:2' or world failed to load
[10:55:55.541] [Info] UniverseServer: Clearing broken world CelestialWorld:-345932287:-341925512:99213406:2

note i dont have any microdungeon mods that spawns underground