Вот такая ошибка вылезла в IDEA,в чем она состоит работают ли assert ?

Exception in thread "main" java.lang.AssertionError at io.hexlet.java.m101.xo.model.Figure.<init>(Figure.java:12) at io.hexlet.java.m101.xo.model.Board.<init>(Board.java:5) at io.hexlet.java.m101.xo.Main.testBoard(Main.java:74) at io.hexlet.java.m101.xo.Main.main(Main.java:15) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)

Process finished with exit code 1