Add missing include

src/utils/Exceptions.hpp

-#ifndef EXCEPTIONS_H
-#define EXCEPTIONS_H
+#ifndef EXCEPTIONS_HPP
+#define EXCEPTIONS_HPP
 
 #include <stdexcept>
+#include <string>
 
 struct IExitError : public std::runtime_error
 {
@@ -54,4 +55,4 @@ struct NotImplementedError : IBacktraceError
   NotImplementedError(std::string_view error_msg);
 };
 
-#endif /* EXCEPTIONS_H */
+#endif   // EXCEPTIONS_HPP