Works in Studio but it throws an error when executing on Orchestrator

[ellie.liu (Ellie)]

My bot was running perfect in Studio but it failed when i tried to execute it using Orchestrator.
I have also tried downgrading the packages used to versions earlier than the Orchestrator but that did not help with the issue.

Can someone help me understand what does this mean pls?

Below is the error received.

• Info: Could not load type ‘System.Activities.TextExpressionBase`1’ from assembly ‘UiPath.Workflow, Version=6.0.0.0, Culture=neutral, PublicKeyToken=null’.

System.TypeLoadException: Could not load type 'System.Activities.TextExpressionBase1' from assembly 'UiPath.Workflow, Version=6.0.0.0, Culture=neutral, PublicKeyToken=null'. at RPA_ID465_KSB1.without_email.GetImplementation() at System.Activities.Activity.OnInternalCacheMetadata(Boolean createEmptyBindings) at System.Activities.Activity.InternalCacheMetadata(Boolean createEmptyBindings, IList1& validationErrors)
at System.Activities.ActivityUtilities.ProcessActivity(ChildActivity childActivity, ChildActivity& nextActivity, Stack1& activitiesRemaining, ActivityCallStack parentChain, IList1& validationErrors, ProcessActivityTreeOptions options, ProcessActivityCallback callback)
at System.Activities.ActivityUtilities.ProcessActivityTreeCore(ChildActivity currentActivity, ActivityCallStack parentChain, ProcessActivityTreeOptions options, ProcessActivityCallback callback, IList1& validationErrors) at System.Activities.ActivityUtilities.CacheRootMetadata(Activity activity, LocationReferenceEnvironment hostEnvironment, ProcessActivityTreeOptions options, ProcessActivityCallback callback, IList1& validationErrors)
at System.Activities.Hosting.WorkflowInstance.ValidateWorkflow(WorkflowInstanceExtensionManager extensionManager)
at System.Activities.Hosting.WorkflowInstance.RegisterExtensionManager(WorkflowInstanceExtensionManager extensionManager)
at System.Activities.WorkflowApplication.EnsureInitialized()
at System.Activities.WorkflowApplication.Enqueue(InstanceOperation operation, Boolean push)
at System.Activities.WorkflowApplication.SimpleOperationAsyncResult.Run(TimeSpan timeout)
at System.Activities.WorkflowApplication.BeginRun(AsyncCallback callback, Object state)
at UiPath.Executor.RobotRunner.RunWorkflow()

[Parvathy (PS Parvathy)]

Hi @ellie.liu

Check the below thread

Could not load type 'System.Activities.TextExpressionBase`1' from assembly 'UiPath.Workflow, Version=6.0.0.0, Culture=neutral, PublicKeyToken=null'

If you are using any package which is higher than any available in Enterprise version then it won’t work. Don’t use beta versions in Enterprise versions. If you lower the versions available to match with Enterprise and publish, it will work. Uninstall community version studio and install Enterprise dev studio and link with that Enterprise cloud orchestrator to resolve the issue. Enterprise studio is 2023.4.4.

Try keeping Runtime rule as Lowest as Applicable by keeping the packages in the latest version.

Hope it helps

[marian.platonov]

Most probably you built the project in a 23.4+ or 23.10+ Studio/CLI version and you are running the project in a lower Robot version.

Try to upgrade the robot to this version https://download.uipath.com/versions/23.10.6/UiPathStudio.msi and retry to run the process.

[ellie.liu (Ellie)]

Hi Marian,

i’m using Studio Community Version 2023.12.0.
The Orchestrator is 2022.10.5.
I have downgraded all the packages used to 2022.10.5 and before.

I’ve checked with IT, they cant upgrade the Orchestrator.

[ellie.liu (Ellie)]

Hi Parvathy,

i’m using Studio Community Version 2023.12.0.
The Orchestrator is 2022.10.5.
I have downgraded all the packages used to 2022.10.5 and before. I have also kept the runtime rule to lowest as applicable.

but those didnt resolve the error.

[ashokkarale]

@ellie.liu,

As Marian highlighted, it’s Robot version issue. Try to upgrade robot version as per version compatibility of your Studio.

Overview - Compatibility matrix

Thanks,
Ashok