How to solve " java.lang.NoSuchMethodError "

Suddenly my maven tests start to fail leaving me frustrated. After figuring out I go through the forum which simply suggested n update to a jar called 'guava'

Error that I was getting:
java.lang.NoSuchMethodError: com.google.common.collect.ImmutableSet.toImmutableSet()Ljava/util/stream/Collector;

Solution :
Update your pom.xml to include

        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>23.0</version>
        </dependency>