[WCF/Web Servics] WCF:Error:Unable to generate deps.json

Importing web service metadata ...
Number of service endpoints found: 1
Scaffolding service reference code ...
Error:Unable to generate deps.json, it may have been already generated.  You can specify the "-d" option before the tool name for diagnostic output (for example, "dotnet -d <toolname>": C:\Program Files\dotnet\sdk\3.1.300\Sdks\Microsoft.NET.Sdk\targets\GenerateDeps\GenerateDeps.proj
Done.

Telemetry is: Enabled
projectfactory: MSBUILD_EXE_PATH = C:\Program Files\dotnet\sdk\3.1.300\MSBuild.dll
projectfactory: MSBuild project path =
projecttoolscommandresolver: ProjectFactory did not find Project.
Microsoft.DotNet.Cli.Utils.CommandUnknownException: Could not execute because the specified command or file was not found.
Possible reasons for this include:                                                                                        * You misspelled a built-in dotnet command.
  * You intended to execute a .NET Core program, but dotnet-svcutil does not exist.
  * You intended to run a global tool, but a dotnet-prefixed executable with this name could not be found on the PATH.
   at Microsoft.DotNet.CommandFactory.CommandFactoryUsingResolver.Create(ICommandResolverPolicy commandResolverPolicy, String commandName, IEnumerable`1 args, NuGetFramework framework, String configuration, String outputPath, String applicationName)                                                                                                                  at Microsoft.DotNet. Cli.Program.ProcessArgs(String[] args, ITelemetry telemetryClient)                                  at Microsoft.DotNet.Cli.Program.Main(String[] args)