Note that I also tried adding:

.RunInDirectory(Path.Combine(Directory.GetCurrentDirectory(), "jsreport"))

to the first code block and that didn't help.

Installed nuget packages local, binary, and aspnetcore.

Added this code to ConfigureServices in Statup.cs:

            var localWebServerReportingService = new LocalReporting()
                .UseBinary(JsReportBinary.GetBinary())
                .Configure(cfg => cfg
                    .AllowedLocalFilesAccess()
                    .FileSystemStore()
                    .BaseUrlAsWorkingDirectory()
                )
                .AsWebServer()
                .Create();
            localWebServerReportingService.StartAsync();
            services.AddJsReport(localWebServerReportingService);

Here is the code to render the file:

                try
                {
                    var viewHtml = await JsReportMvcService.RenderViewToStringAsync(HttpContext, RouteData, "InvoicePdf/InvoicePdf", invoiceGenerationModel);
                    var report = await JsReportMvcService.RenderAsync(new RenderRequest
                    {
                        Template = new Template
                        {
                            Recipe = Recipe.ChromePdf,
                            Engine = Engine.None,
                            Content = viewHtml,
                            Chrome = new Chrome
                            {
                                Format = "Letter",
                                MarginTop = "0.5in",
                                MarginBottom = "0.5in",
                                MarginLeft = "0.5in",
                                MarginRight = "0.5in"
                            }
                        }
                    });
                    var memoryStream = new MemoryStream();
                    await report.Content.CopyToAsync(memoryStream);
                    memoryStream.Seek(0, SeekOrigin.Begin);
                    return memoryStream;
                }
                catch (Exception e)
                {
                    _logger.LogError("Error generating pdf file!");
                    _logger.LogError(e.Message);
                    return null;
                }

On my development machine it works fine. On IIS I am getting this error:

"Unable to render template. Timeout Error: pdf generation not completed after 30000ms"

Any ideas?

This worked for me in the Statup.cs file of a .Net Core web application:

        var localWebServerReportingService = new LocalReporting()
            .UseBinary(JsReportBinary.GetBinary())
            .RunInDirectory(Path.Combine(Directory.GetCurrentDirectory(), "jsreport"))
            .Configure(cfg => cfg
                .AllowedLocalFilesAccess()
                .FileSystemStore()
                .BaseUrlAsWorkingDirectory()
            )
            .AsWebServer()
            .Create();
        localWebServerReportingService.StartAsync();
        services.AddJsReport(localWebServerReportingService);