Can't access to web ui when I build Chirpstack myself

Hello,

I would like to contribute to Chirpstack, but I’m having trouble building Chirpstack. After successfully build and running the binary, I don’t get the web UI.

I’ve successfully installed Docker and Nix-OS.
I can access the Nix-shell, then I can successfully run

make devshell
make build-ui

Then I build Chirpstack:

cd chirpstack
make debug-amd64 DATABASE=sqlite
cd ..

The build goes well.

And finally, I’m going to run chirpdstack.

cd target/x86_64-unknown-linux-musl/debug
mkdir -p configs
./chirpstack -c configs

And when I try to access chirpstack via my browser or via curl, I get:

2025-10-02T08:56:58.815208Z INFO gRPC{uri=/}: chirpstack::api: Finished processing request status="404" latency=821.139µs

Inspecting the code, this seems to correspond to the fact that no files are found in Asset.

if let Some(asset) = Asset::get(path) {
    let mime = mime_guess::from_path(path).first_or_octet_stream(); 
    let mut headers = HeaderMap::new(); 
    headers.insert( 
        header::CONTENT_TYPE, 
        HeaderValue::from_str(mime.as_ref()).unwrap(), 
    ); 

    (StatusCode::OK, headers, asset.data.into()) 
} else { 
    (StatusCode::NOT_FOUND, HeaderMap::new(), vec![]) 
}

and adding this code block before this seems to be confirmed

println!("Serving static file: {}", path); 

let files: Vec<_> = Asset::iter().collect(); 
println!("Number of files embedded: {}", files.len()); 
for file in files {
    println!("Embedded file: {}", file.as_ref());
}

with this result

Serving static file: index.html
Number of files embedded: 0

The files should be present in RustEmbed Assets

#[derive(Rust Embed)]
#[folder = "../ui/build"]
struct Asset;

Does not appear to be present

Am I doing something wrong?

Could you help me?

Thanks in advance

Me too I have the same error when build chirpstack in debug mode

Could you help me?

Thanks in advance

Hello, no i never fix the probleme