plugin test

I tried to write a simple plugin test that extends from LightCodeInsightFixtureTestCase following the example here :

https://www.jetbrains.org/intellij/sdk/docs/basics/testing_plugins/light_and_heavy_tests.html

But i run into "java.lang.NoSuchMethodError: org.apache.log4j.WriterAppender.<init>(Lorg/apache/log4j/Layout;Ljava/io/Writer;"

I tried resolving this by following a suggestion here https://stackoverflow.com/questions/23499537/java-lang-nosuchmethoderror-org-apache-log4j-logger

but was not of much help.

I am using Junit5 for the other unit tests and wanted to write some 'headless' tests. How can i get around NoSuchMethodError? 

Thanks in advance!!!