I got the same issue and fixed by activating the following three services.
default_host/sap/public/bc/webdynpro/mimes
default_host/sap/public/bc/webdynpro/ssr
default_host/sap/public/bc/webdynpro/ViewDesigner
I got the same issue and fixed by activating the following three services.
default_host/sap/public/bc/webdynpro/mimes
default_host/sap/public/bc/webdynpro/ssr
default_host/sap/public/bc/webdynpro/ViewDesigner