Running a script fails when executed in a flow

Script works well when executed by itself but when I try to run it in a flow it fails: 
{
    "error": {
        "name": "ExecutionErr",
        "message": "ExitCode: 1, last log lines:\nODE EXECUTION ---\n\n\nwrote cached binary: /tmp/windmill/cache/bun/9e46268582653fcee6abef94b9c2ca052e4f08b82fde866ca9a4e9a337274bf5 (backed by EE distributed object store: false)\n\n\nerror: Cannot find module \"./Hero\" from \"/tmp/windmill/wk-default-7a435c2e53e7-BOW6c/0193269f-eaad-2526-a510-26edd041e261/main.js\"\nnote: missing sourcemaps for /tmp/windmill/wk-default-7a435c2e53e7-BOW6c/0193269f-eaad-2526-a510-26edd041e261/main.js\nnote: consider bundling with '--sourcemap' to get unminified traces\n\nBun v1.1.32 (Linux x64 baseline)",
        "step_id": "c"
    }
}