In the installable cloud app, the RibbonBar control displays blank.
Cause:
The script file (XML/JSON) that is used to create the RibbonBar control is not selected and deployed with the project.
Solution:
1. Open the PowerServer project object, go to the Client App page, select Files preloaded in uncompressed format and then click Add Files in the External Files option group to add the RibbonBar script file (XML/JSON).
2. Deploy the PowerServer project again to make the change effective.