Here is the trace logs. My PC is Ubuntu 20.04 with python 3.8.10 without any conda or venv. Do you have any clue?
RUST_BACKTRACE=1 runtime --graph-file ./demo.yaml --runtime local
thread 'main' panicked at 'called Result::unwrap() on an Err value: IOError("No such file or directory (os error 2)")', runtime/src/main.rs:91:87
stack backtrace:
0: rust_begin_unwind
at /rustc/22e491ac7ed454d34669151a8b6464cb643c9b41/library/std/src/panicking.rs:498:5
1: core::panicking::panic_fmt
at /rustc/22e491ac7ed454d34669151a8b6464cb643c9b41/library/core/src/panicking.rs:110:14
2: core::result::unwrap_failed
at /rustc/22e491ac7ed454d34669151a8b6464cb643c9b41/library/core/src/result.rs:1690:5
3: runtime::main::main::{{closure}}
4: <core::future::from_generator::GenFuture as core::future::future::Future>::poll
at /rustc/22e491ac7ed454d34669151a8b6464cb643c9b41/library/core/src/future/mod.rs:84:19
5: runtime::main::{{closure}}
at /home/demo/.cargo/git/checkouts/zenoh-flow-examples-50c63331af8b4e8c/05526e0/runtime/src/main.rs:47:1
6: <core::future::from_generator::GenFuture as core::future::future::Future>::poll
at /rustc/22e491ac7ed454d34669151a8b6464cb643c9b41/library/core/src/future/mod.rs:84:19
7: <async_std::task::builder::SupportTaskLocals as core::future::future::Future>::poll::{{closure}}
at /home/demo/.cargo/registry/src/github.com-1ecc6299db9ec823/async-std-1.9.0/src/task/builder.rs:199:17
8: async_std::task::task_locals_wrapper::TaskLocalsWrapper::set_current::{{closure}}
at /home/demo/.cargo/registry/src/github.com-1ecc6299db9ec823/async-std-1.9.0/src/task/task_locals_wrapper.rs:60:13
9: std::thread::local::LocalKey::try_with
at /rustc/22e491ac7ed454d34669151a8b6464cb643c9b41/library/std/src/thread/local.rs:412:16
10: std::thread::local::LocalKey::with
at /rustc/22e491ac7ed454d34669151a8b6464cb643c9b41/library/std/src/thread/local.rs:388:9
11: async_std::task::task_locals_wrapper::TaskLocalsWrapper::set_current
at /home/demo/.cargo/registry/src/github.com-1ecc6299db9ec823/async-std-1.9.0/src/task/task_locals_wrapper.rs:55:9
12: <async_std::task::builder::SupportTaskLocals as core::future::future::Future>::poll
at /home/demo/.cargo/registry/src/github.com-1ecc6299db9ec823/async-std-1.9.0/src/task/builder.rs:197:13
13: <futures_lite::future::Or<F1,F2> as core::future::future::Future>::poll
at /home/demo/.cargo/registry/src/github.com-1ecc6299db9ec823/futures-lite-1.12.0/src/future.rs:526:33
14: async_executor::Executor::run::{{closure}}
at /home/demo/.cargo/registry/src/github.com-1ecc6299db9ec823/async-executor-1.4.1/src/lib.rs:242:31
15: <core::future::from_generator::GenFuture as core::future::future::Future>::poll
at /rustc/22e491ac7ed454d34669151a8b6464cb643c9b41/library/core/src/future/mod.rs:84:19
16: async_executor::LocalExecutor::run::{{closure}}
at /home/demo/.cargo/registry/src/github.com-1ecc6299db9ec823/async-executor-1.4.1/src/lib.rs:447:33
17: <core::future::from_generator::GenFuture as core::future::future::Future>::poll
at /rustc/22e491ac7ed454d34669151a8b6464cb643c9b41/library/core/src/future/mod.rs:84:19
18: async_io::driver::block_on
at /home/demo/.cargo/registry/src/github.com-1ecc6299db9ec823/async-io-1.6.0/src/driver.rs:142:33
19: async_global_executor::reactor::block_on::{{closure}}
at /home/demo/.cargo/registry/src/github.com-1ecc6299db9ec823/async-global-executor-2.0.2/src/reactor.rs:3:18
20: async_global_executor::reactor::block_on
at /home/demo/.cargo/registry/src/github.com-1ecc6299db9ec823/async-global-executor-2.0.2/src/reactor.rs:12:5
21: async_global_executor::executor::block_on::{{closure}}
at /home/demo/.cargo/registry/src/github.com-1ecc6299db9ec823/async-global-executor-2.0.2/src/executor.rs:26:36
22: std::thread::local::LocalKey::try_with
at /rustc/22e491ac7ed454d34669151a8b6464cb643c9b41/library/std/src/thread/local.rs:412:16
23: std::thread::local::LocalKey::with
at /rustc/22e491ac7ed454d34669151a8b6464cb643c9b41/library/std/src/thread/local.rs:388:9
24: async_global_executor::executor::block_on
at /home/demo/.cargo/registry/src/github.com-1ecc6299db9ec823/async-global-executor-2.0.2/src/executor.rs:26:5
25: async_std::task::builder::Builder::blocking::{{closure}}::{{closure}}
at /home/demo/.cargo/registry/src/github.com-1ecc6299db9ec823/async-std-1.9.0/src/task/builder.rs:171:25
26: async_std::task::task_locals_wrapper::TaskLocalsWrapper::set_current::{{closure}}
at /home/demo/.cargo/registry/src/github.com-1ecc6299db9ec823/async-std-1.9.0/src/task/task_locals_wrapper.rs:60:13
27: std::thread::local::LocalKey::try_with
at /rustc/22e491ac7ed454d34669151a8b6464cb643c9b41/library/std/src/thread/local.rs:412:16
28: std::thread::local::LocalKey::with
at /rustc/22e491ac7ed454d34669151a8b6464cb643c9b41/library/std/src/thread/local.rs:388:9
29: async_std::task::task_locals_wrapper::TaskLocalsWrapper::set_current
at /home/demo/.cargo/registry/src/github.com-1ecc6299db9ec823/async-std-1.9.0/src/task/task_locals_wrapper.rs:55:9
30: async_std::task::builder::Builder::blocking::{{closure}}
at /home/demo/.cargo/registry/src/github.com-1ecc6299db9ec823/async-std-1.9.0/src/task/builder.rs:168:17
31: std::thread::local::LocalKey::try_with
at /rustc/22e491ac7ed454d34669151a8b6464cb643c9b41/library/std/src/thread/local.rs:412:16
32: std::thread::local::LocalKey::with
at /rustc/22e491ac7ed454d34669151a8b6464cb643c9b41/library/std/src/thread/local.rs:388:9
33: async_std::task::builder::Builder::blocking
at /home/demo/.cargo/registry/src/github.com-1ecc6299db9ec823/async-std-1.9.0/src/task/builder.rs:161:9
34: async_std::task::block_on::block_on
at /home/demo/.cargo/registry/src/github.com-1ecc6299db9ec823/async-std-1.9.0/src/task/block_on.rs:33:5
35: runtime::main
at /home/demo/.cargo/git/checkouts/zenoh-flow-examples-50c63331af8b4e8c/05526e0/runtime/src/main.rs:47:1
36: core::ops::function::FnOnce::call_once
at /rustc/22e491ac7ed454d34669151a8b6464cb643c9b41/library/core/src/ops/function.rs:227:5
note: Some details are omitted, run with RUST_BACKTRACE=full for a verbose backtrace.
Aborted (core dumped)