error[E0432]: unresolved import `esp_idf_hal::gpio::Unknown`

[ds2k5]

@andy31415

Hello,
try to compile your code

but got this error: error[E0432]: unresolved import esp_idf_hal::gpio::Unknown

error[E0432]: unresolved import `esp_idf_hal::gpio::Unknown`
 --> src/main.rs:4:39
  |
4 | use esp_idf_hal::gpio::{Gpio4, Gpio5, Unknown};
  |                                       ^^^^^^^ no `Unknown` in `gpio`
  |
  = help: consider importing one of these items instead:
          embedded_svc::ota::SlotState::Unknown
          esp_idf_hal::reset::ResetReason::Unknown
          esp_idf_hal::reset::WakeupReason::Unknown
          esp_idf_hal::uart::UartEventPayload::Unknown
          esp_idf_svc::hal::reset::ResetReason::Unknown
          esp_idf_svc::hal::reset::WakeupReason::Unknown
          esp_idf_svc::hal::uart::UartEventPayload::Unknown
          esp_idf_svc::ota::SlotState::Unknown

error[E0432]: unresolved import `esp_idf_svc::netif::EspNetifStack`