java.lang.NumberFormatException: For input string: ""

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You try to parse a String that contains non-numeric characters to an int. The string must contain decimal characters only, optionally beginning with a + or - sign.

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Java does not handle IPv6 nameservers before 1.8.0_60. Upgrade to the latest JVM.

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java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:493)
at java.lang.Integer.parseInt(Integer.java:514)
at scala.collection.immutable.StringLike$class.toInt(StringLike.scala:231)
at kafka.utils.VerifiableProperties.getIntInRange(VerifiableProperties.scala:75)
at kafka.utils.VerifiableProperties.getIntInRange(VerifiableProperties.scala:48)
at kafka.server.KafkaConfig.(KafkaConfig.scala:75)
at kafka.server.KafkaConfig.(KafkaConfig.scala:31)
at kafka.Kafka$.main(Kafka.scala:35)
at kafka.Kafka.main(Kafka.scala)

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