Errors running KSQL-Datagen with secured Schema Registry

I am getting below error running ksql-datagen with secured schema registry for AVRO format topics.

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.ssl.Alerts.getSSLException(Alerts.java:198)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1967)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:331)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:325)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1688)
at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:226)
at sun.security.ssl.Handshaker.processLoop(Handshaker.java:1082)
at sun.security.ssl.Handshaker.process_record(Handshaker.java:1010)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1079)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1388)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1416)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1400)
at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:559)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream0(HttpURLConnection.java:1340)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1315)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:264)
at io.confluent.kafka.schemaregistry.client.rest.RestService.sendHttpRequest(RestService.java:241)
at io.confluent.kafka.schemaregistry.client.rest.RestService.httpRequest(RestService.java:322)
at io.confluent.kafka.schemaregistry.client.rest.RestService.registerSchema(RestService.java:422)
at io.confluent.kafka.schemaregistry.client.rest.RestService.registerSchema(RestService.java:414)
at io.confluent.kafka.schemaregistry.client.rest.RestService.registerSchema(RestService.java:400)
at io.confluent.kafka.schemaregistry.client.CachedSchemaRegistryClient.registerAndGetId(CachedSchemaRegistryClient.java:140)
at io.confluent.kafka.schemaregistry.client.CachedSchemaRegistryClient.register(CachedSchemaRegistryClient.java:196)
at io.confluent.kafka.schemaregistry.client.CachedSchemaRegistryClient.register(CachedSchemaRegistryClient.java:172)
at io.confluent.kafka.serializers.AbstractKafkaAvroSerializer.serializeImpl(AbstractKafkaAvroSerializer.java:71)
at io.confluent.connect.avro.AvroConverter$Serializer.serialize(AvroConverter.java:131)
at io.confluent.connect.avro.AvroConverter.fromConnectData(AvroConverter.java:80)
at io.confluent.ksql.serde.connect.KsqlConnectSerializer.serialize(KsqlConnectSerializer.java:49)
at io.confluent.ksql.serde.tls.ThreadLocalSerializer.serialize(ThreadLocalSerializer.java:37)
at io.confluent.ksql.serde.GenericRowSerDe$GenericRowSerializer.serialize(GenericRowSerDe.java:248)
at io.confluent.ksql.serde.GenericRowSerDe$GenericRowSerializer.serialize(GenericRowSerDe.java:215)
at org.apache.kafka.common.serialization.Serializer.serialize(Serializer.java:62)
at org.apache.kafka.clients.producer.KafkaProducer.doSend(KafkaProducer.java:903)
at org.apache.kafka.clients.producer.KafkaProducer.send(KafkaProducer.java:865)
at io.confluent.ksql.datagen.DataGenProducer.produceOne(DataGenProducer.java:128)
at io.confluent.ksql.datagen.DataGenProducer.populateTopic(DataGenProducer.java:84)
at io.confluent.ksql.datagen.DataGen.lambda$getProducerTask$1(DataGen.java:108)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:450)
at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:317)
at sun.security.validator.Validator.validate(Validator.java:262)
at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:330)
at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:237)
at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:132)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1670)
... 39 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141)
at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126)
at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280)
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:445)
... 45 more
org.apache.kafka.common.errors.SerializationException: Error serializing message to topic: orders_avro
Caused by: org.apache.kafka.connect.errors.DataException: Failed to serialize Avro data from topic orders_avro :
at io.confluent.connect.avro.AvroConverter.fromConnectData(AvroConverter.java:83)
at io.confluent.ksql.serde.connect.KsqlConnectSerializer.serialize(KsqlConnectSerializer.java:49)
at io.confluent.ksql.serde.tls.ThreadLocalSerializer.serialize(ThreadLocalSerializer.java:37)
at io.confluent.ksql.serde.GenericRowSerDe$GenericRowSerializer.serialize(GenericRowSerDe.java:248)
at io.confluent.ksql.serde.GenericRowSerDe$GenericRowSerializer.serialize(GenericRowSerDe.java:215)
at org.apache.kafka.common.serialization.Serializer.serialize(Serializer.java:62)
at org.apache.kafka.clients.producer.KafkaProducer.doSend(KafkaProducer.java:903)
at org.apache.kafka.clients.producer.KafkaProducer.send(KafkaProducer.java:865)
at io.confluent.ksql.datagen.DataGenProducer.produceOne(DataGenProducer.java:128)
at io.confluent.ksql.datagen.DataGenProducer.populateTopic(DataGenProducer.java:84)
at io.confluent.ksql.datagen.DataGen.lambda$getProducerTask$1(DataGen.java:108)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.kafka.common.errors.SerializationException: Error serializing Avro message
Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.ssl.Alerts.getSSLException(Alerts.java:198)
at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1967)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:331)
at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:325)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1688)
at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:226)
at sun.security.ssl.Handshaker.processLoop(Handshaker.java:1082)
at sun.security.ssl.Handshaker.process_record(Handshaker.java:1010)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1079)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1388)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1416)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1400)
at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:559)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream0(HttpURLConnection.java:1340)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1315)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:264)
at io.confluent.kafka.schemaregistry.client.rest.RestService.sendHttpRequest(RestService.java:241)
at io.confluent.kafka.schemaregistry.client.rest.RestService.httpRequest(RestService.java:322)
at io.confluent.kafka.schemaregistry.client.rest.RestService.registerSchema(RestService.java:422)
at io.confluent.kafka.schemaregistry.client.rest.RestService.registerSchema(RestService.java:414)
at io.confluent.kafka.schemaregistry.client.rest.RestService.registerSchema(RestService.java:400)
at io.confluent.kafka.schemaregistry.client.CachedSchemaRegistryClient.registerAndGetId(CachedSchemaRegistryClient.java:140)
at io.confluent.kafka.schemaregistry.client.CachedSchemaRegistryClient.register(CachedSchemaRegistryClient.java:196)
at io.confluent.kafka.schemaregistry.client.CachedSchemaRegistryClient.register(CachedSchemaRegistryClient.java:172)
at io.confluent.kafka.serializers.AbstractKafkaAvroSerializer.serializeImpl(AbstractKafkaAvroSerializer.java:71)
at io.confluent.connect.avro.AvroConverter$Serializer.serialize(AvroConverter.java:131)
at io.confluent.connect.avro.AvroConverter.fromConnectData(AvroConverter.java:80)
at io.confluent.ksql.serde.connect.KsqlConnectSerializer.serialize(KsqlConnectSerializer.java:49)
at io.confluent.ksql.serde.tls.ThreadLocalSerializer.serialize(ThreadLocalSerializer.java:37)
at io.confluent.ksql.serde.GenericRowSerDe$GenericRowSerializer.serialize(GenericRowSerDe.java:248)
at io.confluent.ksql.serde.GenericRowSerDe$GenericRowSerializer.serialize(GenericRowSerDe.java:215)
at org.apache.kafka.common.serialization.Serializer.serialize(Serializer.java:62)
at org.apache.kafka.clients.producer.KafkaProducer.doSend(KafkaProducer.java:903)
at org.apache.kafka.clients.producer.KafkaProducer.send(KafkaProducer.java:865)
at io.confluent.ksql.datagen.DataGenProducer.produceOne(DataGenProducer.java:128)
at io.confluent.ksql.datagen.DataGenProducer.populateTopic(DataGenProducer.java:84)
at io.confluent.ksql.datagen.DataGen.lambda$getProducerTask$1(DataGen.java:108)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:450)
at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:317)
at sun.security.validator.Validator.validate(Validator.java:262)
at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:330)
at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:237)
at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:132)
at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1670)
... 39 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141)
at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126)
at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280)
at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:445)
... 45 more

Using this option, schemaRegistryUrl passing the correct schema Registry URL.
ERROR Failed to send HTTP request to endpoint: https://schema-registry:8081/subjects/orders_avro-value/versions