VDR on SmartTV (Plugin and Widget)

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note:   template argument deduction/substitution failed:
/usr/include/c++/7/ostream: In substitution of ?template<class _Ostream, class _Tp> typename std::enable_if<std::__and_<std::__not_<std::is_lvalue_reference<_Tp> >, std::__is_convertible_to_basic_ostream<_Ostream>, std::__is_insertable<typename std::__is_convertible_to_basic_ostream<_Tp>::__ostream_type, const _Tp&, void> >::value, typename std::__is_convertible_to_basic_ostream<_Tp>::__ostream_type>::type std::operator<<(_Ostream&&, const _Tp&) [with _Ostream = std::basic_ostream<char>&; _Tp = std::__cxx11::basic_stringstream<char>]?:
responsememblk.c:2263:37:   required from here
/usr/include/c++/7/ostream:682:5: error: no type named ?type? in ?struct std::enable_if<false, std::basic_ostream<char>&>?
make: *** [Makefile:66: responsememblk.o] Error 1