java.nio.charset.IllegalCharsetNameException: application/x-www-form-urlencoded
    at java.nio.charset.Charset.checkName(Charset.java:315)
    at java.nio.charset.Charset.lookup2(Charset.java:484)
    at java.nio.charset.Charset.lookup(Charset.java:464)
    at java.nio.charset.Charset.forName(Charset.java:528)
    at org.apache.http.entity.ContentType.create(ContentType.java:210)
    at org.apache.http.entity.StringEntity.<init>(StringEntity.java:116)
    at org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.sendPostData(HTTPHC4Impl.java:1340)
    at org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.handleMethod(HTTPHC4Impl.java:592)
    at org.apache.jmeter.protocol.http.sampler.HTTPHC4Impl.sample(HTTPHC4Impl.java:409)
    at org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sample(HTTPSamplerProxy.java:74)
    at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1166)
    at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1155)
    at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:475)
    at org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:418)
    at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:249)
    at java.lang.Thread.run(Thread.java:745)