Building flipper contract - smartcontracts

Question

I am following this tutorial https://substrate.dev/substrate-contracts-workshop/#/0/building-your-contract but am getting the following error. Does anyone know how to resolve this?
➜ flipper cargo +nightly contract build
[1/5] Building cargo project
Updating crates.io index
Compiling flipper v0.1.0 (/tmp/cargo-contract_dLtaWE)
error[E0277]: the trait bound `__ink_ConstructorDispatchEnum: parity_scale_codec::codec::WrapperTypeDecode` is not satisfied
--> /home/bill/flipper/lib.rs:5:1
|
5 | #[ink::contract]
| ^^^^^^^^^^^^^^^^ the trait `parity_scale_codec::codec::WrapperTypeDecode` is not implemented for `__ink_ConstructorDispatchEnum`
|
::: /home/bill/.cargo/registry/src/github.com-1ecc6299db9ec823/ink_env-3.0.0-rc3/src/api.rs:465:8
|
465 | T: scale::Decode,
| ------------- required by this bound in `decode_input`
|
= note: required because of the requirements on the impl of `parity_scale_codec::codec::Decode` for `__ink_ConstructorDispatchEnum`
= note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0277]: the trait bound `__ink_MessageDispatchEnum: parity_scale_codec::codec::WrapperTypeDecode` is not satisfied
--> /home/bill/flipper/lib.rs:5:1
|
5 | #[ink::contract]
| ^^^^^^^^^^^^^^^^ the trait `parity_scale_codec::codec::WrapperTypeDecode` is not implemented for `__ink_MessageDispatchEnum`
|
::: /home/bill/.cargo/registry/src/github.com-1ecc6299db9ec823/ink_env-3.0.0-rc3/src/api.rs:465:8
|
465 | T: scale::Decode,
| ------------- required by this bound in `decode_input`
|
= note: required because of the requirements on the impl of `parity_scale_codec::codec::Decode` for `__ink_MessageDispatchEnum`
= note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0277`.
error: could not compile `flipper`
To learn more, run the command again with --verbose.
ERROR: `"/home/bill/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/cargo" "build" "--target=wasm32-unknown-unknown" "-Zbuild-std" "-Zbuild-std-features=panic_immediate_abort" "--no-default-features" "--release" "--target-dir=/home/bill/flipper/target"` failed with exit code: Some(101)