Getting Error on Form Designer launch

Help Studio
1

Unable to launch Form Designer. Getting below error message up on Create Form → Open Form Designer

FormDesigner Launch error
FormDesigner Launch error821×285 184 KB

The server was unable to process the request due to an internal error. For more information about the error, either turn on IncludeExceptionDetailInFaults (either from ServiceBehaviorAttribute or from the configuration behavior) on the server in order to send the exception information back to the client, or turn on tracing as per the Microsoft .NET Framework SDK documentation and inspect the server trace logs.

Error: System.Exception: The server was unable to process the request due to an internal error. For more information about the error, either turn on IncludeExceptionDetailInFaults (either from ServiceBehaviorAttribute or from the configuration behavior) on the server in order to send the exception information back to the client, or turn on tracing as per the Microsoft .NET Framework SDK documentation and inspect the server trace logs.

Server stack trace:

at System.ServiceModel.Channels.ServiceChannel.ThrowIfFaultUnderstood(Message reply, MessageFault fault, String action, MessageVersion version, FaultConverter faultConverter)

at System.ServiceModel.Channels.ServiceChannel.HandleReply(ProxyOperationRuntime operation, ProxyRpc& rpc)

at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object ins, Object outs, TimeSpan timeout)

at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)

2

Hey,
on the beggining try delete the json file from the code path and try once again.
btw. which version of UiPath do you have ?

3

Thanks Piotr,
The version is 2021.10.
You mean deleting project.json in the project root and try ?

4

Yes. You can do the backup before delete.
Sometimes when you delete of project.json it’s helping for unknown issues.
I don’t have more ideas right now.
Maybe if it possible try open this project on the different VM.