KafkaSource failing to connect with Kafka broker with Unable to decode key error

Issue

• KafkaSource is unable to connect with Kafka broker to source events and scale Knative Service. In kafka-source-dispatcher following error is observed:

{"@timestamp":"2024-09-24T06:17:52.858Z","@version":"1","message":"App info kafka.consumer for consumer-knative-kafka-source-b6f2eea9-8e88-4ab0-801c-1847ff65c157-2 unregistered","logger_name":"org.apache.kafka.common.utils.AppInfoParser","thread_name":"vert.x-worker-thread-1","level":"INFO","level_value":20000}
Sep 24, 2024 6:17:52 AM io.vertx.core.impl.ContextBase
SEVERE: Unhandled exception
org.apache.kafka.common.KafkaException: Failed to construct kafka consumer
    at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:825)
    at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:666)
    at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:614)
    at dev.knative.eventing.kafka.broker.dispatcherloom.LoomConsumerFactory.create(LoomConsumerFactory.java:28)
......
Caused by: org.apache.kafka.common.errors.InvalidConfigurationException: Invalid PEM keystore configs
Caused by: org.apache.kafka.common.errors.InvalidConfigurationException: Private key could not be loaded
Caused by: java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException: Unable to decode key
.......
Caused by: java.security.InvalidKeyException: Unable to decode key
    at java.base/sun.security.pkcs.PKCS8Key.decode(PKCS8Key.java:137)
    at java.base/sun.security.pkcs.PKCS8Key.<init>(PKCS8Key.java:96)
    at java.base/sun.security.rsa.RSAPrivateCrtKeyImpl.<init>
.......
Caused by: java.io.IOException: algid parse error, not a sequence
    at java.base/sun.security.x509.AlgorithmId.parse(AlgorithmId.java:390)
    at java.base/sun.security.pkcs.PKCS8Key.decode(PKCS8Key.java:112)
    ... 38 more