Symfony version(s) affected: 4.1.3

Description
In Symfony Profiler i can see that Doctrine\Common\ClassLoader is deprecated. And in the trace i can see, that it refers to the Repository of one of the classes, that was autogenerated with the Entity. And it refers to the string where is called parent construct of the class ServiceEntityRepository. Could you please provide some instructions how could i get rid of this notice in profiler?

How to reproduce