Description
Is there an existing issue for this?
- I have searched the existing issues
Describe the bug
After we make a code change and try to run "Hot Reload", we get the following error message:
Error: The assembly 'Microsoft.AspNetCore.Components.WebAssembly' does not contain a public invokable method with [JSInvokableAttribute("ApplyHotReloadDeltas")].
This error message appears both in the Output window in Visual Studio and in the browser console.
We always get this error message, meaning that Hot Reload never works in any context in our solution.
Here’s a description of our solution:
We have an Aspire solution consisting of multiple projects, two of which are Blazor applications.
We can refer to the Blazor applications as:
OAuth (Blazor Web App – Per page/component interactive, mostly static pages)
Customer Portal (Blazor Web App – Global WebAssembly with prerender: false)
We have implemented an OAuth authentication flow. In short, when a user navigates to the Customer Portal, they are immediately redirected to the OAuth site. If they are already signed in, they are redirected back to the Customer Portal; otherwise, they log in and are then redirected back to the Customer Portal site.
The reason I mention this is because I suspect it might be related to why Hot Reload is not working, but I'm not sure.
I have created a new Aspire solution with a Blazor Web App project (same as in our solution, but without the OAuth authentication flow), and in that case, Hot Reload works.
Any idea what might be wrong?
Expected Behavior
When we make simple changes in a Blazor component, hot reload should work.
Steps To Reproduce
No response
Exceptions (if any)
15:00 29.29 MyApp.OAuth.UI (Web server): Hot reload session started
15:00 29.35 MyApp.OAuth.UI (Web assembly): Hot reload session started
15:00 29.60 MyApp.Gateway (Web server): Hot reload session started
15:00 29.87 MyApp.ServiceHooks.API (Web server): Hot reload session started
15:00 30.12 MyApp.CustomerPortal (Web server): Hot reload session started
15:00 40.87 MyApp.CustomerPortal (Web assembly): Hot reload session started
15:00 49.89 MyApp.OAuth.UI: CSS Hot Reload 2b0b7902-e84c-4f57-b421-63788f6d0d42: Tracking https://localhost:7073/css/blazor.n0eosgq6xp.css
15:00 49.99 MyApp.OAuth.UI: CSS Hot Reload 2b0b7902-e84c-4f57-b421-63788f6d0d42: Tracking https://localhost:7073/css/tailwind.compiled.4k8s5sl9ty.css
15:00 50.04 MyApp.OAuth.UI: CSS Hot Reload 2b0b7902-e84c-4f57-b421-63788f6d0d42: Tracking https://localhost:7073/css/dxbl.ogxijkxa7b.css
15:00 50.09 MyApp.OAuth.UI: CSS Hot Reload 2b0b7902-e84c-4f57-b421-63788f6d0d42: Tracking https://localhost:7073/css/app.l6uie8j1yu.css
15:00 50.13 MyApp.OAuth.UI: CSS Hot Reload 2b0b7902-e84c-4f57-b421-63788f6d0d42: Tracking https://localhost:7073/MyApp.OAuth.UI.hsmqp27665.styles.css
15:01 01.79 MyApp.CustomerPortal: CSS Hot Reload 0a87bfd9-0702-49d0-a8bf-e24be89c3119: Tracking https://localhost:7076/css/wait-indicator.bn0ief4mca.css
15:01 01.82 MyApp.CustomerPortal: CSS Hot Reload 0a87bfd9-0702-49d0-a8bf-e24be89c3119: Tracking https://localhost:7076/css/blazor.n4hpn7ta0e.css
15:01 01.92 MyApp.CustomerPortal: CSS Hot Reload 0a87bfd9-0702-49d0-a8bf-e24be89c3119: Tracking https://localhost:7076/css/tailwind.compiled.ckhrwtldxb.css
15:01 01.96 MyApp.CustomerPortal: CSS Hot Reload 0a87bfd9-0702-49d0-a8bf-e24be89c3119: Tracking https://localhost:7076/css/dxbl.ogxijkxa7b.css
15:01 02.00 MyApp.CustomerPortal: CSS Hot Reload 0a87bfd9-0702-49d0-a8bf-e24be89c3119: Tracking https://localhost:7076/css/app.26fyirsdvn.css
15:01 02.03 MyApp.CustomerPortal: CSS Hot Reload 0a87bfd9-0702-49d0-a8bf-e24be89c3119: Tracking https://localhost:7076/MyApp.CustomerPortal.lzxg93falv.styles.css
15:01 35.05 MyApp.OAuth.UI (Web assembly): Sending updates to running application
15:01 35.13 MyApp.OAuth.UI (Web assembly): Updates applied successfully
15:01 35.13 MyApp.CustomerPortal (Web assembly): Sending updates to running application
15:01 35.17 MyApp.CustomerPortal: [Error] at Microsoft.JSInterop.Infrastructure.DotNetDispatcher.GetCachedMethodInfo(AssemblyKey assemblyKey, String methodIdentifier)
at Microsoft.JSInterop.Infrastructure.DotNetDispatcher.InvokeSynchronously(JSRuntime jsRuntime, DotNetInvocationInfo& callInfo, IDotNetObjectReference objectReference, String argsJson)
at Microsoft.JSInterop.Infrastructure.DotNetDispatcher.Invoke(JSRuntime jsRuntime, DotNetInvocationInfo& invocationInfo, String argsJson)
at Microsoft.AspNetCore.Components.WebAssembly.Services.DefaultWebAssemblyJSRuntime.InvokeDotNet(String assemblyName, String methodIdentifier, Int64 dotNetObjectId, String argsJson)
at Microsoft.AspNetCore.Components.WebAssembly.Services.DefaultWebAssemblyJSRuntime.__Wrapper_InvokeDotNet_999282461(JSMarshalerArgument* __arguments_buffer)
Error: The assembly 'Microsoft.AspNetCore.Components.WebAssembly' does not contain a public invokable method with [JSInvokableAttribute("ApplyHotReloadDeltas")].
at sn (https://localhost:7076/_framework/dotnet.runtime.cymp1amu5g.js:3:26894)
at gn (https://localhost:7076/_framework/dotnet.runtime.cymp1amu5g.js:3:28882)
at Object.<anonymous> (https://localhost:7076/_framework/dotnet.runtime.cymp1amu5g.js:3:38412)
at Object.invokeDotNetFromJS (https://localhost:7076/_framework/blazor.web.js:1:157655)
at w.invokeDotNetMethod (https://localhost:7076/_framework/blazor.web.js:1:3507)
at w.invokeDotNetStaticMethod (https://localhost:7076/_framework/blazor.web.js:1:3263)
at Hr.wt._internal.applyHotReloadDeltas (https://localhost:7076/_framework/blazor.web.js:1:163016)
at applyBlazorDeltas (https://localhost:7076/_framework/aspnetcore-browser-refresh.js:234:15)
at Object.BlazorHotReloadDeltav3 (https://localhost:7076/_framework/aspnetcore-browser-refresh.js:49:41)
at connection.onmessage (https://localhost:7076/_framework/aspnetcore-browser-refresh.js:57:29)
15:01 35.17 MyApp.CustomerPortal (Web assembly): [Error] Applying updates to the application failed. Additional information on why the update failed may be available in your browser's debug console window.
15:01 35.18 An unexpected error has occurred, any pending updates have been discarded.
.NET Version
9.0.203
Anything else?
We are using Visual Studio 17.13.6