TimeEvolver/core/krylovTimeEvolver.cpp:489:224: error: 'class std::basic_ostream' has no member named 'str'
logger.log_message(krylovLogger::WARNING, "Warning: Analytic error " + (std::stringstream() << err).str() + " was smaller than the estimate of the numerical error " + (std::stringstream() << numericalErrorEstimateTotal).str() + ". \
TimeEvolver/core/krylovTimeEvolver.cpp:489:224: error: 'class std::basic_ostream' has no member named 'str'
logger.log_message(krylovLogger::WARNING, "Warning: Analytic error " + (std::stringstream() << err).str() + " was smaller than the estimate of the numerical error " + (std::stringstream() << numericalErrorEstimateTotal).str() + ". \