Error: the result from java could not deserialize

[yasmeen_mirza]

Hi,

when I’m using create java object, giving error as ‘the result from java could not deserialize’.
any idea how to resolve this?

here is my process:-

In my java method .xml file is creating with data.

[loginerror (Maciej Kuźmicz)]

Hi @yasmeen_mirza

Could you give a try with this example?

Running Static and Object Methods

Could you also paste here the full error message?

[yasmeen_mirza]

i gone through that link only while creating java object. still getting that error.

Error:

19.7.0+Branch.master.Sha.8c253d13718eed5c7db27daef6facd1fe1b0d067

Source: Create Java Object

Message: Constructor could not be called.

Exception Type: System.InvalidOperationException

RemoteException wrapping System.InvalidOperationException: Constructor could not be called. —> RemoteException wrapping System.InvalidOperationException: The result from java could not be deserialized. —> RemoteException wrapping System.ArgumentNullException: String reference not set to an instance of a String.
Parameter name: s
at System.Text.Encoding.GetBytes(String s)
at UiPath.Java.Service.JavaResponse.Deserialize(String json)
— End of inner exception stack trace —
at UiPath.Java.Service.JavaResponse.Deserialize(String json)
at UiPath.Java.Service.JavaService.d__8.MoveNext()
— End of stack trace from previous location where exception was thrown —
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at UiPath.Java.JavaInvoker.d__17.MoveNext()
— End of stack trace from previous location where exception was thrown —
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at UiPath.Java.JavaInvoker.d__15.MoveNext()
— End of stack trace from previous location where exception was thrown —
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at UiPath.Java.Activities.CreateJavaObject.d__8.MoveNext()
— End of inner exception stack trace —
at UiPath.Core.Activities.ScopeActivity.OnFaulted(NativeActivityFaultContext faultContext, Exception propagatedException, ActivityInstance propagatedFrom)
at System.Activities.Runtime.FaultCallbackWrapper.Invoke(NativeActivityFaultContext faultContext, Exception propagatedException, ActivityInstance propagatedFrom)
at System.Activities.Runtime.FaultCallbackWrapper.FaultWorkItem.Execute(ActivityExecutor executor, BookmarkManager bookmarkManager)

this is the error i got.

[loginerror (Maciej Kuźmicz)]

From some additional research, it seems like this bug happens when you try to invoke a a java file that has dependency on other libraries/jar.

Could you a scenario where you invoke a single file?

We have it registered as a bug and it will be eventually fixed.

[Siddu]

@loginerror
i downloaded that example from link what you mentioned in the above comment, it is successfully executing. but when i created sample java code and try to invoke and run it from uipath. i am also facing the same issue like what @yasmeen_mirza mentioned.

[loginerror (Maciej Kuźmicz)]

Hi @Siddu

The issue is currently with our team. I will update the topic when it will be resolved.

Unfortunately, I cannot provide any estimation when that would be.

[Siddu]

@loginerror
Oh! k Thank you.

[Siddu]

Hi @loginerror Any updates on this issue?

[sampadakumardalai]

Any update on this issue . ?

[loginerror (Maciej Kuźmicz)]

Hi @sampadakumardalai

Welcome to our UiPath Forum!

It would seem that the issue is still in the backlog. However, given that the Java activity package is open-sourced for anyone to try to fix it, I will mark this topic as #pr-welcome

Community.Activities/Activities/Java at master · UiPath/Community.Activities

So that anyone who is browsing for inspiration on our Community GitHub contributions can easily find it and maybe even contribute towards fixing the bug.