How debug error

[realroot2185]

From the editor using the "green play button " I launch the rpg game from the tutorial but it crashes:

[INFO]: [WARNING]: OpenGL Message
[INFO]: 	Source: Calls to the OpenGL API
[INFO]: 	Type: Code has triggered possible performance issues
[INFO]: 	Id: 131218
[INFO]: 	Message: Program/shader state performance warning: Vertex shader in program 3 is being recompiled based on GL state.
thread 'main' panicked at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/fyrox-core-0.27.0/src/pool.rs:942:17:
Attempt to use dangling handle [Idx: 0; Gen: 0]. Record has generation 1!
stack backtrace:
   0: rust_begin_unwind
   1: core::panicking::panic_fmt
   2: fyrox_core::pool::Pool<T,P>::borrow
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/fyrox-core-0.27.0/src/pool.rs:942:17
   3: <fyrox_core::pool::Pool<T,P> as core::ops::index::Index<fyrox_core::pool::Handle<T>>>::index
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/fyrox-core-0.27.0/src/pool.rs:1603:9
   4: <fyrox::scene::graph::Graph as core::ops::index::Index<fyrox_core::pool::Handle<fyrox::scene::node::Node>>>::index
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/fyrox-0.33.1/src/scene/graph/mod.rs:2050:19
   5: <rpg::player::Player as fyrox::script::ScriptTrait>::on_update
             at ./game/src/player.rs:109:40
   6: fyrox::engine::ScriptProcessor::handle_scripts::{{closure}}
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/fyrox-0.33.1/src/engine/mod.rs:800:29
   7: fyrox::engine::process_node
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/fyrox-0.33.1/src/engine/mod.rs:1029:13
   8: fyrox::engine::ScriptProcessor::handle_scripts
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/fyrox-0.33.1/src/engine/mod.rs:799:25
   9: fyrox::engine::Engine::handle_scripts
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/fyrox-0.33.1/src/engine/mod.rs:1809:9
  10: fyrox::engine::Engine::pre_update
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/fyrox-0.33.1/src/engine/mod.rs:1775:13
  11: fyrox::engine::Engine::update
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/fyrox-0.33.1/src/engine/mod.rs:1548:9
  12: fyrox::engine::executor::Executor::run::{{closure}}
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/fyrox-0.33.1/src/engine/executor.rs:204:25
  13: core::ops::function::impls::<impl core::ops::function::FnMut<A> for &mut F>::call_mut
             at /build/rust/src/rustc-1.76.0-src/library/core/src/ops/function.rs:294:13
  14: core::ops::function::impls::<impl core::ops::function::FnMut<A> for &mut F>::call_mut
             at /build/rust/src/rustc-1.76.0-src/library/core/src/ops/function.rs:294:13
  15: winit::platform_impl::platform::x11::EventLoop<T>::single_iteration
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/winit-0.29.15/src/platform_impl/linux/x11/mod.rs:614:13
  16: winit::platform_impl::platform::x11::EventLoop<T>::poll_events_with_timeout
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/winit-0.29.15/src/platform_impl/linux/x11/mod.rs:541:9
  17: winit::platform_impl::platform::x11::EventLoop<T>::pump_events
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/winit-0.29.15/src/platform_impl/linux/x11/mod.rs:447:13
  18: winit::platform_impl::platform::x11::EventLoop<T>::run_on_demand
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/winit-0.29.15/src/platform_impl/linux/x11/mod.rs:408:19
  19: winit::platform_impl::platform::EventLoop<T>::run_on_demand
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/winit-0.29.15/src/platform_impl/linux/mod.rs:829:56
  20: winit::platform_impl::platform::EventLoop<T>::run
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/winit-0.29.15/src/platform_impl/linux/mod.rs:822:9
  21: winit::event_loop::EventLoop<T>::run
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/winit-0.29.15/src/event_loop.rs:249:9
  22: fyrox::engine::executor::run_executor
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/fyrox-0.33.1/src/engine/executor.rs:257:20
  23: fyrox::engine::executor::Executor::run
             at ~/.cargo/registry/src/index.crates.io-6f17d22bba15001f/fyrox-0.33.1/src/engine/executor.rs:156:9
  24: executor::main
             at ./executor/src/main.rs:8:5
  25: core::ops::function::FnOnce::call_once
             at /build/rust/src/rustc-1.76.0-src/library/core/src/ops/function.rs:250:5
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
[INFO]: Shader BlurShader_VertexShader compiled successfully!

data/scene.rgs is just one node a terrain.
I can upload it here.

Is there some tutorial to how make a map?
I'd like to make or use one with a very small playable area.

[mrDIMAS]

The issue is in your code Attempt to use dangling handle [Idx: 0; Gen: 0]. Record has generation 1! - this means that you have an unassigned handle in your Player script.