jetcd 0.5.11 giving error when calling KVClient.Get() method - spring

Question

I have wriiten a jetcd client wrapper in a spring application. And it uses jetcd-core 0.5.11. Getting following error while fetching the config value via KVClient.
Wrapper Method
public ByteSequence Get(String key) throws EtcdException {
GetResponse response = null;
try {
CompletableFuture<GetResponse> getFuture = EtcdClient.get(ByteSequence.from(key, StandardCharsets.UTF_8));
response = getFuture.get();
if (response.getKvs().isEmpty()) {
logger.error(String.format("Empty KeyValues returned for key: %s\n", key));
return null;
}
return response.getKvs().get(0).getValue();
} catch (Exception e) {
throw new EtcdException(new EtcdError("Error in Etcd Client GET"), e.getMessage());
}
}
Error:
java.lang.NoSuchMethodError: 'void io.netty.buffer.PooledByteBufAllocator.<init>(boolean, int, int, int, int, int, int, boolean)'
at io.grpc.netty.Utils.createByteBufAllocator(Utils.java:176) ~[grpc-netty-1.42.1.jar!/:1.42.1]
at io.grpc.netty.Utils.access$000(Utils.java:75) ~[grpc-netty-1.42.1.jar!/:1.42.1]
at io.grpc.netty.Utils$ByteBufAllocatorPreferDirectHolder.<clinit>(Utils.java:97) ~[grpc-netty-1.42.1.jar!/:1.42.1]
at io.grpc.netty.Utils.getByteBufAllocator(Utils.java:144) ~[grpc-netty-1.42.1.jar!/:1.42.1]
at io.grpc.netty.NettyClientTransport.start(NettyClientTransport.java:233) ~[grpc-netty-1.42.1.jar!/:1.42.1]
at io.grpc.internal.ForwardingConnectionClientTransport.start(ForwardingConnectionClientTransport.java:34) ~[grpc-core-1.42.1.jar!/:1.42.1]
at io.grpc.internal.ForwardingConnectionClientTransport.start(ForwardingConnectionClientTransport.java:34) ~[grpc-core-1.42.1.jar!/:1.42.1]
at io.grpc.internal.InternalSubchannel.startNewTransport(InternalSubchannel.java:259) ~[grpc-core-1.42.1.jar!/:1.42.1]
at io.grpc.internal.InternalSubchannel.access$400(InternalSubchannel.java:66) ~[grpc-core-1.42.1.jar!/:1.42.1]
at io.grpc.internal.InternalSubchannel$2.run(InternalSubchannel.java:201) ~[grpc-core-1.42.1.jar!/:1.42.1]
at io.grpc.SynchronizationContext.drain(SynchronizationContext.java:95) ~[grpc-api-1.42.1.jar!/:1.42.1]
at io.grpc.SynchronizationContext.execute(SynchronizationContext.java:127) ~[grpc-api-1.42.1.jar!/:1.42.1]
at io.grpc.internal.ManagedChannelImpl$NameResolverListener.onResult(ManagedChannelImpl.java:1872) ~[grpc-core-1.42.1.jar!/:1.42.1]
at io.grpc.NameResolver$Listener2.onAddresses(NameResolver.java:210) ~[grpc-api-1.42.1.jar!/:1.42.1]
at io.etcd.jetcd.resolver.AbstractNameResolver.doResolve(AbstractNameResolver.java:127) ~[jetcd-core-0.6.0.jar!/:na]
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[na:na]
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[na:na]
at java.base/java.lang.Thread.run(Thread.java:829) ~[na:na]
org.pickme.etcd.client.EtcdException: io.etcd.jetcd.common.exception.EtcdException: Panic! This is a bug!