gazebo/examples/plugins/camera build error

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Hello,

I am trying to build the camera example under plugins, using the latest gazebo-11. While trying to make I get the following error:

/usr/include/sdformat-9.2/sdf/Param.hh:72:57: error: expected constructor, destructor, or type conversion before ‘;’ token template<class T> ParamStreamer(T) -> ParamStreamer<T>; /usr/include/sdformat-9.2/sdf/Param.hh:83:47: error: ‘variant’ is not a member of ‘std’ ParamStreamer<std::variant<Ts...>> sv)

I am attaching the full error output. C:\fakepath\error.yaml

Any help on this problem greatly appreciated.