Error Activity type 'VisualBasicValue`1' requires compilation in order to run

[Meu_Eu_Nando (Luiz Sennos)]

Hi

I’m having this error when trying to filter a datatable using LINQ:

“Assign: Expression Activity type ‘VisualBasicValue`1’ requires compilation in order to run. Please ensure that the workflow has been compiled.”

How can I fix this ?

[ppr (Peter Preuss)]

can you try:
g.First()).CopyToDataTable - we added () after First

EDITED: yes agree to @Yoichi and take his suggested hint as the first action

[Yoichi]

Hi,

This error is caused by double quote except 0x22 (") For now, can you replace (reinput) double quote with " ?

The following also helps you.

Troubleshooting Guide : Conversion from Windows-Legacy project to Windows project

This topic describes troubleshooting guide regarding conversion from Windows-Legacy project to Windows project as of Dec 2022. Hope this helps those who face these problems. 1 Quick Reference by Error Messages, Situation etc. Phase Error message / Situation Reference Open project foobar.xaml: Cannot create unknown type’{clr-Namespace:UiPath.foo.Activities;assembly=UiPath.bar.Activities}ActivityName’. 2.2 Missing Activities package OR 2.3 Missing activity Development Unable to set pro…

Regards,

[Meu_Eu_Nando (Luiz Sennos)]

@Yoichi

"

Thank you. That’s really weird. I saw same problem reported by other users and this solution woudn’t help me. But now, strangely, I’ve simply copied and paste the " and it worked.
Thanks !!

Cheers.