Error running the mongodb connector in apache kafka (NoClassDefFoundError:io/confluent/kafka/schemategistry)

ERROR Stopping due to error (org.apache.kafka.connect.cli.ConnectStandalone:130)
java.lang.NoClassDefFoundError: io/confluent/kafka/schemaregistry/client/SchemaRegistryClient
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at org.apache.kafka.common.config.ConfigDef.parseType(ConfigDef.java:719)
        at org.apache.kafka.common.config.ConfigDef.parseValue(ConfigDef.java:474)
        at org.apache.kafka.common.config.ConfigDef.parse(ConfigDef.java:467)
        at org.apache.kafka.common.config.AbstractConfig.<init>(AbstractConfig.java:108)
        at org.apache.kafka.common.config.AbstractConfig.<init>(AbstractConfig.java:129)
        at org.apache.kafka.connect.runtime.WorkerConfig.<init>(WorkerConfig.java:385)
        at org.apache.kafka.connect.runtime.standalone.StandaloneConfig.<init>(StandaloneConfig.java:42)
        at org.apache.kafka.connect.cli.ConnectStandalone.main(ConnectStandalone.java:81)
Caused by: java.lang.ClassNotFoundException: io.confluent.kafka.schemaregistry.client.SchemaRegistryClient
        at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:419)
        at org.apache.kafka.connect.runtime.isolation.PluginClassLoader.loadClass(PluginClassLoader.java:104)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:352)
        ... 10 more

Hi @saravana_hariharan,

Could you provide more information? The expected schema registry class does not appear to be available. What version of Kafka / Kafka connect are you running?

Ross

apache kafka 2.12-2.4.1
connector - mongodb connector 1.3.0