Data view widget

  Hi,

On OpenCms 16, I'm trying to use the "Data View widget" within
the Mercury template. It should be implemented for the content type
"asset connection > imgur", but it returns the following error.

Failed
to instantiate dialog for path
"org.opencms.ui.dialogs.embedded.CmsDataViewAction".

The same type used
in OpenCms 10.5.4 with the Apollo template works without issues. Does
anyone know how to fix the problem? 

Thank you.

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