Error during compilation

[vladimir-salvador]

 cargo build --release

The following warnings were emitted during compilation:

warning: onig_sys@69.2.0: couldn't execute `llvm-config --prefix` (error: No such file or directory (os error 2))
warning: onig_sys@69.2.0: set the LLVM_CONFIG_PATH environment variable to a valid `llvm-config` executable

error: failed to run custom build command for `onig_sys v69.2.0`

Caused by:
  process didn't exit successfully: `/Users/vlad/projects/presentui/target/release/build/onig_sys-a432eabedfc23337/build-script-build` (exit status: 101)
  --- stdout
  cargo:warning=couldn't execute `llvm-config --prefix` (error: No such file or directory (os error 2))
  cargo:warning=set the LLVM_CONFIG_PATH environment variable to a valid `llvm-config` executable

  --- stderr
  thread 'main' panicked at /Users/vlad/.cargo/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-0.4.30/src/fallback.rs:594:9:
  "OnigValue_struct_(unnamed_at_oniguruma/src/oniguruma_h_746_3)" is not a valid Ident
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
warning: build failed, waiting for other jobs to finish...