NoSuchMethodError with protobufs

[Amber Xie]

Hi,

I'm working on a Java / Maven project, and I'm getting the following errors on a Java servlet:

(1) When I first run the code:

CAUSED BY: java.lang.reflect.UndeclaredThrowableException

CAUSED BY: java.lang.reflect.InvocationTargetException

CAUSED BY: java.lang.NoSuchMethodError: 'com.google.protobuf.Parser com.google.protobuf.MessageLite.getParserForType()'

(2) When I reload the page

CAUSED BY: java.lang.reflect.UndeclaredThrowableException

CAUSED BY: java.lang.reflect.InvocationTargetException

CAUSED BY: java.lang.NoClassDefFoundError: Could not initialize class com.google.ads.googleads.v3.services.stub.GrpcCampaignServiceStub

What could the error possible be? I'm not sure if I need a dependency in my pom.xml file or I need to import certain classes.

Thanks,