diff --git a/src/main/scala/kafka/console/ConsumerConsole.scala b/src/main/scala/kafka/console/ConsumerConsole.scala
index 022d59d..658974f 100644
--- a/src/main/scala/kafka/console/ConsumerConsole.scala
+++ b/src/main/scala/kafka/console/ConsumerConsole.scala
@@ -92,10 +92,15 @@ class ConsumerConsole(config: KafkaConfig) extends KafkaConsole(config: KafkaCon
 
             consumerGroup.members().asScala.filter(!_.assignment().topicPartitions().isEmpty).foreach(m => {
                 m.assignment().topicPartitions().asScala.foreach(topicPartition => {
-                    val t = topicPartitionConsumeInfoMap.get(topicPartition).get
-                    t.clientId = m.clientId()
-                    t.consumerId = m.consumerId()
-                    t.host = m.host()
+                    topicPartitionConsumeInfoMap.get(topicPartition) match {
+                        case None =>
+                        case Some(t) => {
+                            t.clientId = m.clientId()
+                            t.consumerId = m.consumerId()
+                            t.host = m.host()
+                        }
+                    }
+
                 })
             })
 
diff --git a/ui/src/router/index.js b/ui/src/router/index.js
index c47204c..e92c3f7 100644
--- a/ui/src/router/index.js
+++ b/ui/src/router/index.js
@@ -46,8 +46,8 @@ const routes = [
 ];
 
 const router = new VueRouter({
-  mode: "history",
-  // mode: "hash",
+  // mode: "history",
+  mode: "hash",
   base: process.env.BASE_URL,
   routes,
 });