thread 'main' panicked at 'called Option::unwrap() on a None value'

[kalderonski]

Hello
On Ubuntu Linux 18 I am gettinng this error when running grin-miner

thread 'main' panicked at 'called Option::unwrap() on a None value', src/libcore/option.rs:355:21

Backtrace gives this:

stack backtrace:
0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
1: std::sys_common::backtrace::_print
at src/libstd/sys_common/backtrace.rs:71
2: std::panicking::default_hook::{{closure}}
at src/libstd/sys_common/backtrace.rs:59
at src/libstd/panicking.rs:210
3: std::panicking::default_hook
at src/libstd/panicking.rs:224
4: std::panicking::rust_panic_with_hook
at src/libstd/panicking.rs:487
5: std::panicking::continue_panic_fmt
at src/libstd/panicking.rs:394
6: rust_begin_unwind
at src/libstd/panicking.rs:321
7: core::panicking::panic_fmt
at src/libcore/panicking.rs:95
8: core::panicking::panic
at src/libcore/panicking.rs:59
9: grin_miner::main
10: std::rt::lang_start::{{closure}}
11: std::panicking::try::do_call
at src/libstd/rt.rs:59
at src/libstd/panicking.rs:306
12: __rust_maybe_catch_panic
at src/libpanic_unwind/lib.rs:102
13: std::rt::lang_start_internal
at src/libstd/panicking.rs:285
at src/libstd/panic.rs:398
at src/libstd/rt.rs:58
14: main
15: __libc_start_main
16: _start

[hashmap]

Would you mind to open it in grin-miner project?

[mingderwang]

yes, it works if you run in the root directory of the project.

[earlystareyes]

I have same problem when I open grin-miner on mbp.how to deal with it?

[olealgoritme]

cd /your_folder/grin-miner ; target/debug/grin-miner