Episerver forms- Content, Setting tab missing in editor view.

Hi ,

I am using Episerver version 11.12.  Recently I have installed  Episerver Form to my Project but after that When I am creating any Episerver Form

in create a new form container. The "content" and "settings" fields are missing.  Only I am able to see "Retention Policy" tab . So thats why I am not able to create any Form element.

Could anyone please help me to resolve this issue. Its very urgent.

Thanks

Sourav