How do people find the actual culprit line?

Template compile errors not helping me at all

    // overload the stream operator
    template <typename T>
    streamable_logger_t& operator<<(const T& value) {
***     log_stream_ << value;
        return *this;
    }

is generating about 20 copies of this message.

1>C:\MeteorRepos\remoteapitesting\sdktests\performance_logger\loghelper.h(50,9): error C2679: binary '<<': no operator found which takes a right-hand operand of type 'const T' (or there is no acceptable conversion)
1>C:\MeteorRepos\remoteapitesting\sdktests\performance_logger\loghelper.h(50,9): error C2679:         with
1>C:\MeteorRepos\remoteapitesting\sdktests\performance_logger\loghelper.h(50,9): error C2679:         [
1>C:\MeteorRepos\remoteapitesting\sdktests\performance_logger\loghelper.h(50,9): error C2679:             T=std::vector<std::_Vbase,std::allocator<std::_Vbase>>
1>C:\MeteorRepos\remoteapitesting\sdktests\performance_logger\loghelper.h(50,9): error C2679:         ]

The compiler is telling me that my << stream operator cannot take something I passed in to it, but it's not able for many reasons really to tell me where that operator is called from. I use the operator all over the show and just on variable is going to have changed it's type. "I" have a clue where it happened, but, what if I was trying to fix someone else mess? How would I go find every place that "this specific class" stream operator is being used to stream an object that my template cannot handle?

I'm missing some magic, or is it always just a divide and conquer? Can I rewrite my operator in some way that would make the problem call to it easier to spot in future?