Hibernate validation "Unable to initialize javax.el.ExpressionFactory" error
None of the above worked for me
However This did:
Right click on the project > Properties > Project Facets
on the right most area select Runtimes tab and selct your Tomcat Runtime, this will provide the required libs available to the test.
You have 2 different incompatible versions of javax.el (3 and 2).
Just use this dependency, which will cover everything (it's the one we recommend in the GitHub repo's README.md but I need to update the getting started guide):
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.el</artifactId>
<version>3.0.1-b08</version>
</dependency>
and remove all the other javax.el dependencies (API and impl). It should work like a charm once you're done.