at com.intellij.openapi.diagnostic.Logger.assertTrue(Logger.java:472) at com.intellij.openapi.diagnostic.Logger.assertTrue(Logger.java:481) at krasa.mavenhelper ...

java.lang.Throwable: Assertion failed at com.intellij.openapi.diagnostic.Logger.assertTrue(Logger.java:218) ... at com.intellij.psi.search.FilenameIndex ...

Assertions have been in the software engineering canon for many years, most notably as the centerpiece of the Design by Contract facility that Bertrand Meyer built into his Eiffel programming language ...