GitHub user RuneRoven added a comment to the discussion: error with nginx while 
running on kubernetes

some errors in the backend:
at 
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
        at 
org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
        at 
org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
        at 
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
        at java.base/java.lang.Thread.run(Unknown Source)

2023-02-06T22:24:50.589Z ERROR 1 --- [nio-8030-exec-4] 
o.g.j.server.ServerRuntime$Responder     : Error while closing the output 
stream in order to commit response.

org.glassfish.jersey.server.ContainerException: 
java.util.concurrent.ExecutionException: java.lang.NullPointerException: Cannot 
invoke "String.length()" because "this.input" is null
        at 
org.glassfish.jersey.servlet.internal.ResponseWriter.getResponseContext(ResponseWriter.java:278)
        at 
org.glassfish.jersey.servlet.internal.ResponseWriter.writeResponseStatusAndHeaders(ResponseWriter.java:128)

....
....
...

        at 
org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:478)
        at 
org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:400)
        at 
org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:81)
        at 
org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:261)
        ... 91 common frames omitted

2023-02-06T22:24:50.609Z ERROR 1 --- [nio-8030-exec-4] 
[.[.[.a.s.s.c.StreamPipesResourceConfig] : Servlet.service() for servlet 
[org.apache.streampipes.service.core.StreamPipesResourceConfig] in context with 
path [/streampipes-backend] threw exception [java.lang.NullPointerException: 
Cannot invoke "String.length()" because "this.input" is null] with root cause

java.lang.NullPointerException: Cannot invoke "String.length()" because 
"this.input" is null
        at java.base/java.net.URI$Parser.parse(Unknown Source)
        at java.base/java.net.URI.<init>(Unknown Source)
        at java.base/java.net.URI.create(Unknown Source)
        at org.apache.http.client.fluent.Request.Get(Request.java:86)

GitHub link: 
https://github.com/apache/streampipes/discussions/1225#discussioncomment-4887472

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