Resolve "Ceres assertion raised"

Closes #332 (closed)

include/core/ceres_wrapper/ceres_manager.h

@@ -82,7 +82,7 @@ class CeresManager : public SolverManager
 
         ceres::Solver::Options& getSolverOptions();
 
-        virtual bool check() const override;
+        virtual bool check() override;
 
         const Eigen::SparseMatrixd computeHessian() const;