Dear Members, I am just a beginner and trying to install NiFi for first time. I am having problem getting it working. I would appreciate help to fix the issue. I have windows 7 32 bit. I have installed LibericaJDK-19 just to get Nifi working. Else it was not working with java 8 as well for me. I am trying nifi-1.19.1. conf file is default I have set JAVA_HOME to point to new JDK - 19   Last lines of nifi-bootstrap.log 2023-01-18 21:51:13,373 INFO [NiFi Bootstrap Command Listener] org.apache.nifi.bootstrap.RunNiFi Apache NiFi now running and listening for Bootstrap requests on port 51200 2023-01-18 21:53:44,866 ERROR [NiFi logging handler] org.apache.nifi.StdErr Failed to start web server: Cannot invoke "org.apache.nifi.nar.ExtensionMapping.size()" because "extensionMapping" is null 2023-01-18 21:53:44,866 ERROR [NiFi logging handler] org.apache.nifi.StdErr Shutting down... 2023-01-18 21:53:45,515 INFO [main] org.apache.nifi.bootstrap.RunNiFi NiFi never started. Will not restart NiFi     At start of nifi-app.log    I get the warning   WARN [main] org.apache.nifi.nar.NarUnpacker Unable to load NAR library bundles due to java.util.zip.ZipException: zip END header not found Will proceed without loading any further Nar bundles java.util.zip.ZipException: zip END header not found at java.base/java.util.zip.ZipFile$Source.findEND(ZipFile.java:1483) at java.base/java.util.zip.ZipFile$Source.initCEN(ZipFile.java:1491) at java.base/java.util.zip.ZipFile$Source.<init>(ZipFile.java:1329) at java.base/java.util.zip.ZipFile$Source.get(ZipFile.java:1292) at java.base/java.util.zip.ZipFile$CleanableResource.<init>(ZipFile.java:710) at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:243) at java.base/java.util.zip.ZipFile.<init>(ZipFile.java:172) at java.base/java.util.jar.JarFile.<init>(JarFile.java:345) at java.base/java.util.jar.JarFile.<init>(JarFile.java:316) at java.base/java.util.jar.JarFile.<init>(JarFile.java:282) at org.apache.nifi.nar.NarUnpacker.determineDocumentedNiFiComponents(NarUnpacker.java:605) at org.apache.nifi.nar.NarUnpacker.unpackDocumentation(NarUnpacker.java:550) at org.apache.nifi.nar.NarUnpacker.unpackBundleDocs(NarUnpacker.java:287) at org.apache.nifi.nar.NarUnpacker.mapExtensions(NarUnpacker.java:271) at org.apache.nifi.nar.NarUnpacker.unpackNars(NarUnpacker.java:220) at org.apache.nifi.nar.NarUnpacker.unpackNars(NarUnpacker.java:89) at org.apache.nifi.nar.NarUnpacker.unpackNars(NarUnpacker.java:83) at org.apache.nifi.nar.NarUnpacker.unpackNars(NarUnpacker.java:74) at org.apache.nifi.NiFi.<init>(NiFi.java:142) at org.apache.nifi.NiFi.<init>(NiFi.java:83) at org.apache.nifi.NiFi.main(NiFi.java:332)     and at the end of nifi-app.log   2023-01-18 21:53:44,866 WARN [main] org.apache.nifi.web.server.JettyServer Failed to start web server... shutting down. java.lang.NullPointerException: Cannot invoke "org.apache.nifi.nar.ExtensionMapping.size()" because "extensionMapping" is null at org.apache.nifi.documentation.DocGenerator.generate(DocGenerator.java:61) at org.apache.nifi.web.server.JettyServer.start(JettyServer.java:788) at org.apache.nifi.NiFi.<init>(NiFi.java:172) at org.apache.nifi.NiFi.<init>(NiFi.java:83) at org.apache.nifi.NiFi.main(NiFi.java:332) 2023-01-18 21:53:44,889 INFO [Thread-0] org.apache.nifi.NiFi Application Server shutdown started 2023-01-18 21:53:44,890 INFO [Thread-0] org.apache.nifi.NiFi Application Server shutdown completed     I would appreciate for the help.   best regards Muhammad     ... View more