# Troubleshooting

#### OpenSSL Build Error <a href="#openssl-build-error" id="openssl-build-error"></a>

When running the CLI in a Debian-based Linux environment, you may encounter the following error:

```
Could not find directory of OpenSSL installation, and this `-sys` crate cannot
proceed without this knowledge. If OpenSSL is installed and this crate had
trouble finding it,  you can set the `OPENSSL_DIR` environment variable for the
compilation process.

Make sure you also have the development packages of openssl installed.
For example, `libssl-dev` on Ubuntu or `openssl-devel` on Fedora.

If you're in a situation where you think the directory *should* be found
automatically, please open a bug at https://github.com/sfackler/rust-openssl
and include information about your system as well as this message.

$HOST = aarch64-unknown-linux-gnu
$TARGET = aarch64-unknown-linux-gnu
openssl-sys = 0.9.108
```

This issue occurs because the OpenSSL development libraries are missing. Please execute the following commands to install the required packages.

```
apt update
apt install -y build-essential pkg-config libssl-dev
```

#### Using Rustup Instead of the `apt` Package <a href="#using-rustup-instead-of-the-apt-package" id="using-rustup-instead-of-the-apt-package"></a>

When Rust is installed via `apt install cargo rustc`, you cannot use the **nightly version** of Rust. To enable nightly and other toolchains, please install Rust through **Rustup** instead.

Run the following command:

```
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
```

When prompted during installation, **enter `1`** and press **Enter** to proceed with the default installation.

To make the Rustup-managed Rust toolchain available in your shell, add the following line to your `~/.bashrc`:

```
export PATH="$HOME/.cargo/bin:$PATH"
```

Then apply the changes:

```
source ~/.bashrc
```

Run the following command to confirm that the Rust compiler being used is the one installed via Rustup:

```
which rustc
```

If the output shows:

```
/home/<username>/.cargo/bin/rustc
```

then your configuration is complete and Rustup is now managing your Rust toolchain.

#### How to Fix Environment Variable Loading Errors <a href="#how-to-fix-environment-variable-loading-errors" id="how-to-fix-environment-variable-loading-errors"></a>

When you run the following command:

```
cargo run -r -- claim-builder-reward --eth-private-key <scroll-private-key>
```

you may encounter an error like this:

```
Envy error: unknown variant `production`, expected one of `local`, `dev`, `staging`, `prod`
```

If you have correctly set the environment variables in your `.env` file but this error still occurs, please try running the following command instead. Make sure to replace `<scroll-private-key>` with your actual Scroll private key.

```
( set -a; source .env; set +a; cargo run -r -- claim-builder-reward --eth-private-key <scroll-private-key> )
```


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