Command 'orca' not found @win/processx.c:983

I want to export a plotly object to a static image using plotly::orca on Win10, but I'm a getting the following error:

<c_error in rethrow_call(c_processx_exec, command, c(command, args), stdin,  ...:
 Command 'orca' not found @win/processx.c:983 (processx_exec)>

The problem seems to be not orca itself but processx::run. I wrote my own little orca function using base::system instead which works just fine.

Here is the same issue.

    p <- plot_ly(mtcars, x = ~mpg, y = ~wt)
    
    ## Fails
    plotly::orca(p)

    ## Works
    file = "plot.png"; format = "png"
    debug=verbose=safe=F
    b <- plotly_build(p)
    plotlyjs <- plotly:::plotlyjsBundle(b)
    plotlyjs_path <- file.path(plotlyjs$src$file, plotlyjs$script)
    if (!is.null(plotlyjs$package)) {
      plotlyjs_path <- system.file(plotlyjs_path, package = plotlyjs$package)
    }
    tmp <- tempfile(fileext = ".json")
    cat(plotly:::to_JSON(b$x[c("data", "layout")]), file = tmp)
    args <- c("graph", tmp, "-o", file, "--format", 
              format, "--plotlyjs", plotlyjs_path, if (debug) "--debug", 
              if (verbose) "--verbose", if (safe) "--safe-mode")
    base::system(paste("orca", paste(args, collapse = " ")))

使用 mtcars 示例通过 plotly::orca(p) 重现 Win10 故障，然后检查 processx::run 调用，并将其与报告中所示的可正常工作的 base::system 命令进行比较。当 plotly::orca 能够在 Windows 上将绘图导出为静态图像且不出现 "Command 'orca' not found" 错误时，即表示完成。