I running "dotnet watch" after follow the instructions on this link "https://preview.keenthemes.com/blazor/metronic/docs/getting-started" without any modifications.
When I open the "/signin" route, the page loads but I receive this error on console:

warn: Microsoft.AspNetCore.Components.Server.Circuits.RemoteRenderer[100]
Unhandled exception rendering component: Could not find 'KTSigninGeneral.init' ('KTSigninGeneral' was undefined).
Error: Could not find 'KTSigninGeneral.init' ('KTSigninGeneral' was undefined).
at http://localhost:5170/_framework/blazor.server.js:1:497
at Array.forEach ()
at i.findFunction (http://localhost:5170/_framework/blazor.server.js:1:465)
at E (http://localhost:5170/_framework/blazor.server.js:1:2606)
at http://localhost:5170/_framework/blazor.server.js:1:3494
at new Promise ()
at kt.beginInvokeJSFromDotNet (http://localhost:5170/_framework/blazor.server.js:1:3475)
at http://localhost:5170/_framework/blazor.server.js:1:72077
at Array.forEach ()
at kt._invokeClientMethod (http://localhost:5170/_framework/blazor.server.js:1:72063)
Microsoft.JSInterop.JSException: Could not find 'KTSigninGeneral.init' ('KTSigninGeneral' was undefined).
Error: Could not find 'KTSigninGeneral.init' ('KTSigninGeneral' was undefined).
at http://localhost:5170/_framework/blazor.server.js:1:497
at Array.forEach ()
at i.findFunction (http://localhost:5170/_framework/blazor.server.js:1:465)
at E (http://localhost:5170/_framework/blazor.server.js:1:2606)
at http://localhost:5170/_framework/blazor.server.js:1:3494
at new Promise ()
at kt.beginInvokeJSFromDotNet (http://localhost:5170/_framework/blazor.server.js:1:3475)
at http://localhost:5170/_framework/blazor.server.js:1:72077
at Array.forEach ()
at kt._invokeClientMethod (http://localhost:5170/_framework/blazor.server.js:1:72063)
at Microsoft.JSInterop.JSRuntime.InvokeAsync[TValue](Int64 targetInstanceId, String identifier, Object[] args)
at Microsoft.JSInterop.JSRuntimeExtensions.InvokeVoidAsync(IJSRuntime jsRuntime, String identifier, Object[] args)
at Starterkit.Pages.Auth.SignIn.OnAfterRenderAsync(Boolean firstRender) in E:\User\Desktop\Metronic-8.1.5\asp.net-core\demo1\blazor_demo1\Starterkit\Pages\Auth\SignIn.razor:line 110
at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle, ComponentState owningComponentState)
fail: Microsoft.AspNetCore.Components.Server.Circuits.CircuitHost[111]
Unhandled exception in circuit 'kHjDhF2BWJAYvkYZrGYnXbr4RIc1NAlFYYb3mCraV1A'.
Microsoft.JSInterop.JSException: Could not find 'KTSigninGeneral.init' ('KTSigninGeneral' was undefined).
Error: Could not find 'KTSigninGeneral.init' ('KTSigninGeneral' was undefined).
at http://localhost:5170/_framework/blazor.server.js:1:497
at Array.forEach ()
at i.findFunction (http://localhost:5170/_framework/blazor.server.js:1:465)
at E (http://localhost:5170/_framework/blazor.server.js:1:2606)
at http://localhost:5170/_framework/blazor.server.js:1:3494
at new Promise ()
at kt.beginInvokeJSFromDotNet (http://localhost:5170/_framework/blazor.server.js:1:3475)
at http://localhost:5170/_framework/blazor.server.js:1:72077
at Array.forEach ()
at kt._invokeClientMethod (http://localhost:5170/_framework/blazor.server.js:1:72063)
at Microsoft.JSInterop.JSRuntime.InvokeAsync[TValue](Int64 targetInstanceId, String identifier, Object[] args)
at Microsoft.JSInterop.JSRuntimeExtensions.InvokeVoidAsync(IJSRuntime jsRuntime, String identifier, Object[] args)
at Starterkit.Pages.Auth.SignIn.OnAfterRenderAsync(Boolean firstRender) in E:\User\Desktop\Metronic-8.1.5\asp.net-core\demo1\blazor_demo1\Starterkit\Pages\Auth\SignIn.razor:line 110
at Microsoft.AspNetCore.Components.RenderTree.Renderer.GetErrorHandledTask(Task taskToHandle, ComponentState owningComponentState)

This prevents the form to validate the fields.