JS Web App in Studio Web can't deploy — Package version & Entry point are "Not applicable" — missing [package] error

Help Apps
1

Hi community,

I’m building an in-solution JS Web App in UiPath Studio Web (cloud) as an Action Center human task form for a Maestro BPMN process for the AgentHack 2026. The ActionSchema is fully configured (inputs, outputs, outcomes) and the UI is built on MainPage. But deployment always fails.

Error:

App 'FraudInvestigatorForm': One or more properties are missing: [package]

The same error appears when I:

  • Click Deploy on the solution
  • Click Debug (Run project)
  • Click Pack and upgrade
2

@Raj_Pattnaik_73

Try to check complete error details if you get any

if not open networks tab and then debug or publish and it might show properly the error details

cheers

3

Looks like the app package metadata is not getting generated correctly during publish/deploy.

Try these options
-Check browser DevTools → Network/Console tab while doing Deploy or Pack & Upgrade
-Verify package.json and app manifest are properly created
-Ensure MainPage is configured as the entry page
-Try creating a fresh JS Web App and compare the generated structure