Please ensure that your JAVA_HOME points to a valid Java SDK. You are currently pointing to: /usr/lib/jvm/java-13-oracle code example

Example: Please ensure that your JAVA_HOME points to a valid Java SDK. You are currently pointing to: /usr/lib/jvm/java-13-oracle

Please ensure that your JAVA_HOME points to a valid Java SDK.  You are currently pointing to:    /usr/lib/jvm/java-13-oracle