How to solve this issue

Are you trying to use AppyBuilders’s DateUtils extension ?

Yes , actually I m making chat system in our app so I use AB Dateutils extension,this extension download from kodular community

Did you uploaded it to assets or import it ?

I’m Import this to extension

Do you wish to share your aia or pm to me to chek it ?

Sorry I can’t share aia because it’s very important for me I have spend 8 months on this project so I hope you understand ,once again sorry

Never encoundered such an error with Date Uttils extension. Check if you have a project within a project that causes this error

Have you deleted DataUtils extension from the extensions drawer by mistake, but not so from a screen?
It happens if you have done this with any extension.