Fix the 'target not found' error by installing the missing cross-compilation target using the rustup target add command.
The error occurs because the Rust toolchain lacks the specific target triple required for cross-compilation. Install the missing target using rustup with the exact target name you are trying to compile for.
rustup target add <target-triple>
Replace <target-triple> with your specific architecture (e.g., wasm32-unknown-unknown or aarch64-linux-gnu).
Cross-compiling means building code for a different computer than the one you are using. This error happens because your computer doesn't have the specific instructions needed to build for that other type of computer. Installing the target is like downloading a translation dictionary so your compiler can speak the other computer's language.