java.lang.NullPointerException at org.apache.jmeter.protocol.http.control.HC3CookieHandler.addCookieFromHeader(HC3CookieHandler.java:141)
 at org.apache.jmeter.protocol.http.control.CookieManager.addCookieFromHeader(CookieManager.java:333)
 at org.apache.jmeter.protocol.http.sampler.HTTPHC3Impl.saveConnectionCookies(HTTPHC3Impl.java:1113)
 at org.apache.jmeter.protocol.http.sampler.HTTPSampler2.saveConnectionCookies(HTTPSampler2.java:65)
 at org.apache.jmeter.protocol.oauth.sampler.OAuthSampler.sample(OAuthSampler.java:282)
 at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1105)
 at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1094)
 at org.apache.jmeter.threads.JMeterThread.process_sampler(JMeterThread.java:429)
 at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:257)
 at java.lang.Thread.run(Thread.java:724)