Looks like a jar file issue, try checking for duplicate jar files and remove the oldest version.
Also check marketplace modules for updates.
The problem is with your SAML module.
The solution is to clean your userlib directory, remove all duplicate modules, and also remove all files marked as required by SAML. Next, re-install the SAML from the Marketplace. This should restore all the required .jar files and solve the Java error.
Good luck!
Same problem as described by the issuer. Quite frustrating because the problem appears without touching anything from the downloaded example.
Not solved with my understanding of the recommendations.
If this is something that might happen to other students, please provide an alternative solution were this kind of issues are less probable. If the issue appears quite often, then please provide specific guidelines in the course.
Thanks anyway for the great contents of the courses. They are really good.