net::ERR_CONNECTION_REFUSED

When i run the radzen 2.53.2 code generator, there is an error: net::ERR_CONNECTION_REFUSED
Can any one has face it and got a solution?

the full description of the error is:

radzen: Generating code ...
radzen: Code generation done in 2769ms.
dotnet: watch :
dotnet: Started

net::ERR_CONNECTION_REFUSED
dotnet: CSC : warning CS8034: Unable to load Analyzer assembly C:\Users\Administrator.nuget\packages\microsoft.aspnetcore.components.analyzers\3.1.0\analyzers\dotnet\cs\Microsoft.AspNetCore.Components.Analyzers.dll : Assembly with same name is already loaded [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]

dotnet: Pages\AddTblTrafficSign.razor(116,67): error CS1503: Argument 1: cannot convert from 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblTrafficSign.razor.g.cs(518,284): error CS1503: Argument 2: cannot convert from 'Microsoft.AspNetCore.Components.EventCallback<byte[]>' to 'Microsoft.AspNetCore.Components.EventCallback' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]

dotnet: obj\Debug\netcoreapp3.1\Razor\Pages\AddTblTrafficSign.razor.g.cs(519,213): error CS0029: Cannot implicitly convert type 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblTrafficSign.razor.g.cs(519,213): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblTrafficSign.razor.g.cs(121,174): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
Pages\AddTblCountry.razor(230,67): error CS1503: Argument 1: cannot convert from 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1013,284): error CS1503: Argument 2: cannot convert from 'Microsoft.AspNetCore.Components.EventCallback<byte[]>' to 'Microsoft.AspNetCore.Components.EventCallback' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1014,213): error CS0029: Cannot implicitly convert type 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1014,213): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
Pages\AddTblCountry.razor(240,67): error CS1503: Argument 1: cannot convert from 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1049,284): error CS1503: Argument 2: cannot convert from 'Microsoft.AspNetCore.Components.EventCallback<byte[]>' to 'Microsoft.AspNetCore.Components.EventCallback' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1050,213): error CS0029: Cannot implicitly convert type 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1050,213): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
Pages\AddTblCountry.razor(250,67): error CS1503: Argument 1: cannot convert from 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1085,284): error CS1503: Argument 2: cannot convert from 'Microsoft.AspNetCore.Components.EventCallback<byte[]>' to 'Microsoft.AspNetCore.Components.EventCallback' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1086,213): error CS0029: Cannot implicitly convert type 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]

dotnet: obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1086,213): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
Pages\AddTblCountry.razor(260,67): error CS1503: Argument 1: cannot convert from 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1121,284): error CS1503: Argument 2: cannot convert from 'Microsoft.AspNetCore.Components.EventCallback<byte[]>' to 'Microsoft.AspNetCore.Components.EventCallback' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1122,213): error CS0029: Cannot implicitly convert type 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1122,213): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
Pages\AddTblCountry.razor(270,67): error CS1503: Argument 1: cannot convert from 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1157,284): error CS1503: Argument 2: cannot convert from 'Microsoft.AspNetCore.Components.EventCallback<byte[]>' to 'Microsoft.AspNetCore.Components.EventCallback' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1158,213): error CS0029: Cannot implicitly convert type 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]

dotnet: obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1158,213): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
Pages\AddTblCountry.razor(280,67): error CS1503: Argument 1: cannot convert from 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1193,284): error CS1503: Argument 2: cannot convert from 'Microsoft.AspNetCore.Components.EventCallback<byte[]>' to 'Microsoft.AspNetCore.Components.EventCallback' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1194,213): error CS0029: Cannot implicitly convert type 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1194,213): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
Pages\AddTblCountry.razor(300,67): error CS1503: Argument 1: cannot convert from 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1272,284): error CS1503: Argument 2: cannot convert from 'Microsoft.AspNetCore.Components.EventCallback<byte[]>' to 'Microsoft.AspNetCore.Components.EventCallback' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]

dotnet: obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1273,213): error CS0029: Cannot implicitly convert type 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(1273,213): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\AddTblCountry.razor.g.cs(121,174): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
Pages\EditTblCountry.razor(230,67): error CS1503: Argument 1: cannot convert from 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1013,284): error CS1503: Argument 2: cannot convert from 'Microsoft.AspNetCore.Components.EventCallback<byte[]>' to 'Microsoft.AspNetCore.Components.EventCallback' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1014,213): error CS0029: Cannot implicitly convert type 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1014,213): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]

dotnet: Pages\EditTblCountry.razor(240,67): error CS1503: Argument 1: cannot convert from 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1049,284): error CS1503: Argument 2: cannot convert from 'Microsoft.AspNetCore.Components.EventCallback<byte[]>' to 'Microsoft.AspNetCore.Components.EventCallback' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1050,213): error CS0029: Cannot implicitly convert type 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1050,213): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
Pages\EditTblCountry.razor(250,67): error CS1503: Argument 1: cannot convert from 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1085,284): error CS1503: Argument 2: cannot convert from 'Microsoft.AspNetCore.Components.EventCallback<byte[]>' to 'Microsoft.AspNetCore.Components.EventCallback' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1086,213): error CS0029: Cannot implicitly convert type 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]

dotnet: obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1086,213): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
Pages\EditTblCountry.razor(260,67): error CS1503: Argument 1: cannot convert from 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1121,284): error CS1503: Argument 2: cannot convert from 'Microsoft.AspNetCore.Components.EventCallback<byte[]>' to 'Microsoft.AspNetCore.Components.EventCallback' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1122,213): error CS0029: Cannot implicitly convert type 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1122,213): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
Pages\EditTblCountry.razor(270,67): error CS1503: Argument 1: cannot convert from 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1157,284): error CS1503: Argument 2: cannot convert from 'Microsoft.AspNetCore.Components.EventCallback<byte[]>' to 'Microsoft.AspNetCore.Components.EventCallback' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]

dotnet: obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1158,213): error CS0029: Cannot implicitly convert type 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1158,213): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
Pages\EditTblCountry.razor(280,67): error CS1503: Argument 1: cannot convert from 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1193,284): error CS1503: Argument 2: cannot convert from 'Microsoft.AspNetCore.Components.EventCallback<byte[]>' to 'Microsoft.AspNetCore.Components.EventCallback' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1194,213): error CS0029: Cannot implicitly convert type 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1194,213): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
Pages\EditTblCountry.razor(300,67): error CS1503: Argument 1: cannot convert from 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]

dotnet: obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1272,284): error CS1503: Argument 2: cannot convert from 'Microsoft.AspNetCore.Components.EventCallback<byte[]>' to 'Microsoft.AspNetCore.Components.EventCallback' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1273,213): error CS0029: Cannot implicitly convert type 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(1273,213): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblCountry.razor.g.cs(121,174): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
Pages\EditTblTrafficSign.razor(116,67): error CS1503: Argument 1: cannot convert from 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblTrafficSign.razor.g.cs(518,284): error CS1503: Argument 2: cannot convert from 'Microsoft.AspNetCore.Components.EventCallback<byte[]>' to 'Microsoft.AspNetCore.Components.EventCallback' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblTrafficSign.razor.g.cs(519,213): error CS0029: Cannot implicitly convert type 'byte[]' to 'string' [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblTrafficSign.razor.g.cs(519,213): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]
obj\Debug\netcoreapp3.1\Razor\Pages\EditTblTrafficSign.razor.g.cs(121,174): error CS1662: Cannot convert lambda expression to intended delegate type because some of the return types in the block are not implicitly convertible to the delegate return type [D:\03-Dev\Radzen Blazor\server\DemsWeb.csproj]

dotnet:

dotnet: The build failed. Fix the build errors and run again.

dotnet: watch :
dotnet: Exited with error code 1

dotnet: watch : Waiting for a file to change before restarting dotnet...

net::ERR_CONNECTION_REFUSED
net::ERR_CONNECTION_REFUSED
net::ERR_CONNECTION_REFUSED
net::ERR_CONNECTION_REFUSED
net::ERR_CONNECTION_REFUSED
net::ERR_CONNECTION_REFUSED
net::ERR_CONNECTION_REFUSED
net::ERR_CONNECTION_REFUSED
net::ERR_CONNECTION_REFUSED
net::ERR_CONNECTION_REFUSED
net::ERR_CONNECTION_REFUSED
net::ERR_CONNECTION_REFUSED
net::ERR_CONNECTION_REFUSED
net::ERR_CONNECTION_REFUSED
net::ERR_CONNECTION_REFUSED
net::ERR_CONNECTION_REFUSED

Hi @solo,

Welcome to the Radzen community.

Unfortunately we haven't experienced this problem before. There seem to be some compilation errors. Are those pages generated by Radzen? Did you customize them in any way?