How to solve this issue can anyone suggest me?

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Type ‘System.Xml.Linq.XDeclaration’ cannot be serialized. Consider marking it with the DataContractAttribute attribute, and marking all of its members you want serialized with the DataMemberAttribute attribute. If the type is a collection, consider marking it with the CollectionDataContractAttribute. See the Microsoft .NET Framework documentation for other supported types.

System.Runtime.Serialization.InvalidDataContractException: Type ‘System.Xml.Linq.XDeclaration’ cannot be serialized. Consider marking it with the DataContractAttribute attribute, and marking all of its members you want serialized with the DataMemberAttribu…

2

Hi @Soundarya_Guduri

Can you check the xml extraction xaml …there might be some missing references or dependencies in them…

Or any serialization variables are creating the problem

Cheers

3

Hi @Soundarya_Guduri ,

As an Initial Try, Check if Supports Persistence is enabled in Project Settings. If not enabled, Enable it and Check if the same error exists.

If the above doesn’t work, take a look at the Doc below which describes about the serializable variables that are allowed when Persistence activities are involved.

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@Soundarya_Guduri ,

Were the above Suggestions noted and Checked ?

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it is enable @supermanPunch

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Hi @Soundarya_Guduri

The issue seems to occur when you are using the forms activity can you try changing the package version of the same to some other version to debug to see if that version is having any issues?

cheers

8

I have changed the version and ran the process but the issue not clear yet.

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Hi @Soundarya_Guduri

Are you able to start the process?

if yes then can you run in debug and see which activity is failing exactly

If no then close uipath change the project.json to project.json.old and reopen mail workflow and check if it solves the issue

cheers

10

By putting break point at Create form task and debugged the process at that time

Once Action created — should get modified by the user and click submit—and i checked the orchestrator queues the data got updated and its working

But when we are debugging without putting breakpoint at create form task
we are getting this issue.

Wait form task not executing

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Hi @Soundarya_Guduri

Can you confirm if the data used while debugging and while running is same?

if not may be that might be a data issue as well.

While running the bot in debug when it fails and the bot goes to paused state please check the locals panel and see the inner exception details from the exception details in the locals panel that might give more information on why it failed

cheers

13

Hi @Soundarya_Guduri

The error “Type ‘System.Xml.Linq.XDeclaration’ cannot be serialized” occurs when you try to serialize an object of type XDeclaration using the .NET Framework’s built-in XML serialization mechanism. This error indicates that the XDeclaration class is not marked with the [Serializable] attribute, which means that it cannot be serialized.

To fix this issue, you have a few options:

  1. Use a different method to serialize the object. Instead of using the built-in XML serialization mechanism, you can use a different method to serialize the XDeclaration object. For example, you can use the XDeclaration class’s own ToString() method to convert the object to a string, and then save the string to a file or transmit it over a network.
  2. Mark the XDeclaration class with the [Serializable] attribute. If you want to use the built-in XML serialization mechanism, you can mark the XDeclaration class with the [Serializable] attribute to indicate that it can be serialized. To do this, you will need to modify the XDeclaration class’s source code and recompile it.
  3. Use a different XML library. Instead of using the built-in XML classes in the .NET Framework, you can use a different XML library that provides its own XML serialization mechanism. For example, you can use the System.Xml.XmlDocument class, which is marked with the [Serializable] attribute and can be serialized using the built-in XML serialization mechanism.

I hope this helps!