While starting Jmeter by bypassing proxy it is returning "java.lang.NullPointerException: null"

[asfimport]

Pravin (Bug 63238):
Actual:-
When Jmeter(v5.1) is started using following command by bypassing he proxy it is returning null in console.

Jmeter start up command used to bypass proxy & opnen Jmeter:-
C:\Performance\apache-jmeter-5.1\bin>jmeter.bat -H <proxyName> -P <Port> -u <userName>

Full stack trace from Jmeter.log:-

2019-03-05 19:31:30,482 ERROR o.a.j.JMeter: An error occurred:
java.lang.NullPointerException: null
at org.apache.jmeter.JMeter.setProxy(JMeter.java:763) ~[ApacheJMeter_core.jar:5.1 r1853635]
at org.apache.jmeter.JMeter.start(JMeter.java:490) [ApacheJMeter_core.jar:5.1 r1853635]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_191]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_191]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_191]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_191]
at org.apache.jmeter.NewDriver.main(NewDriver.java:253) [ApacheJMeter.jar:5.1 r1853635]

Output from console:-

An error occurred: null
errorlevel=1
Press any key to continue . . .

Note:- When same command is used in Jmeter version 5.0 it is working & I am able to see jmeter GUI opening bypassing proxy server.

Severity: major
OS: All

Duplicated by:

• java.lang.NullPointerException: null when run Jmeter 5.1 with proxy options #5023

[asfimport]

@pmouawad (migrated from Bugzilla):
This bug has been marked as a duplicate of #5023