Null pointer Exception

[gosemathraj]

I followed the instructions given for video chat. When i run the application on local host it gives null pointer exception and the ROOM NAME option is not visible. So how i can connect to a room
Exception :

[main] INFO com.github.javafaker.Faker - Using default locale en
[Thread-0] INFO org.eclipse.jetty.util.log - Logging initialized @3072ms
[Thread-0] INFO spark.webserver.JettySparkServer - == Spark has ignited ...
[Thread-0] INFO spark.webserver.JettySparkServer - >> Listening on 0.0.0.0:4567
[Thread-0] INFO org.eclipse.jetty.server.Server - jetty-9.3.z-SNAPSHOT
[Thread-0] INFO org.eclipse.jetty.server.ServerConnector - Started ServerConnect
or@28749c36{HTTP/1.1,[http/1.1]}{0.0.0.0:4567}
[Thread-0] INFO org.eclipse.jetty.server.Server - Started @8306ms
[qtp153863947-20] ERROR spark.webserver.MatcherFilter -
java.lang.NullPointerException
at com.twilio.jwt.Jwt.toJwt(Jwt.java:54)
at com.twilio.Webapp.lambda$main$0(Webapp.java:47)
at spark.RouteImpl$1.handle(RouteImpl.java:58)
at spark.webserver.MatcherFilter.doFilter(MatcherFilter.java:162)
at spark.webserver.JettyHandler.doHandle(JettyHandler.java:61)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandle
r.java:189)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.j
ava:141)
at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:
52)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper
.java:119)
at org.eclipse.jetty.server.Server.handle(Server.java:517)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:302)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.jav
a:242)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(Abstra
ctConnection.java:245)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoin
t.java:75)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceA
ndRun(ExecuteProduceConsume.java:213)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(Exec
uteProduceConsume.java:147)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPoo
l.java:654)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool
.java:572)
at java.lang.Thread.run(Unknown Source)
[qtp153863947-14] ERROR spark.webserver.MatcherFilter -
java.lang.NullPointerException
at com.twilio.jwt.Jwt.toJwt(Jwt.java:54)
at com.twilio.Webapp.lambda$main$0(Webapp.java:47)
at spark.RouteImpl$1.handle(RouteImpl.java:58)
at spark.webserver.MatcherFilter.doFilter(MatcherFilter.java:162)
at spark.webserver.JettyHandler.doHandle(JettyHandler.java:61)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandle
r.java:189)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.j
ava:141)
at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:
52)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper
.java:119)
at org.eclipse.jetty.server.Server.handle(Server.java:517)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:302)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.jav
a:242)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(Abstra
ctConnection.java:245)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoin
t.java:75)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceA
ndRun(ExecuteProduceConsume.java:213)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(Exec
uteProduceConsume.java:147)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPoo
l.java:654)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool
.java:572)
at java.lang.Thread.run(Unknown Source)

[AgentKnopf]

@gosemathraj did you make modifications to the sample code? You're getting an NPE when trying to create the JWT tokenv ia toJWT - check your stacktrace, it also tells you the line on which this is happening in the target class as well as your Webapp class. And if you didn't use the exact same code as provided in the sample those variations would be relevant.

[zjbpku]

solve the NPE by removing export in .env file.