I'm getting this error but I'm not aware of me using any plugins...What can I do to fix this?
[root@centos6 bin]# ./jmeter -n -t ../scripts/Beta/Beta_Load_Test_Plan1.jmx
Error in NonGUIDriver java.lang.IllegalArgumentException: Problem loading XML from:'/opt/jmeter/bin/../scripts/Beta/Beta_Load_Test_Plan1.jmx', conversion error com.thoughtworks.xstream.converters.ConversionException: kg.apc.jmeter.samplers.DummySampler : kg.apc.jmeter.samplers.DummySampler
---- Debugging information ----
message : kg.apc.jmeter.samplers.DummySampler
cause-exception : com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message : kg.apc.jmeter.samplers.DummySampler
class : org.apache.jorphan.collections.ListedHashTree
required-type : org.apache.jorphan.collections.ListedHashTree
converter-type : org.apache.jmeter.save.converters.HashTreeConverter
path : /jmeterTestPlan/hashTree/hashTree/hashTree[8]/kg.apc.jmeter.samplers.DummySampler
line number : 16279
------------------------------- : kg.apc.jmeter.samplers.DummySampler : kg.apc.jmeter.samplers.DummySampler
---- Debugging information ----
message : kg.apc.jmeter.samplers.DummySampler
cause-exception : com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message : kg.apc.jmeter.samplers.DummySampler
class : org.apache.jorphan.collections.ListedHashTree
required-type : org.apache.jorphan.collections.ListedHashTree
converter-type : org.apache.jmeter.save.converters.HashTreeConverter
path : /jmeterTestPlan/hashTree/hashTree/hashTree[8]/kg.apc.jmeter.samplers.DummySampler
line number : 16279
-------------------------------
message : kg.apc.jmeter.samplers.DummySampler : kg.apc.jmeter.samplers.DummySampler
---- Debugging information ----
message : kg.apc.jmeter.samplers.DummySampler
cause-exception : com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message : kg.apc.jmeter.samplers.DummySampler
class : org.apache.jorphan.collections.ListedHashTree
required-type : org.apache.jorphan.collections.ListedHashTree
converter-type : org.apache.jmeter.save.converters.HashTreeConverter
path : /jmeterTestPlan/hashTree/hashTree/hashTree[8]/kg.apc.jmeter.samplers.DummySampler
line number : 16279
-------------------------------
cause-exception : com.thoughtworks.xstream.converters.ConversionException
cause-message : kg.apc.jmeter.samplers.DummySampler : kg.apc.jmeter.samplers.DummySampler
first-jmeter-class : org.apache.jmeter.save.converters.HashTreeConverter.unmarshal(HashTreeConverter.java:67)
class : org.apache.jmeter.save.ScriptWrapper
required-type : org.apache.jorphan.collections.ListedHashTree
converter-type : org.apache.jmeter.save.ScriptWrapperConverter
path : /jmeterTestPlan/hashTree/hashTree/hashTree[8]/kg.apc.jmeter.samplers.DummySampler
line number : 16279
version : 2.13 r1665067
-------------------------------
It fails at DummySampler - part of "standard" jmeter-plugin:
conversion error com.thoughtworks.xstream.converters.ConversionException: kg.apc.jmeter.samplers.DummySampler : kg.apc.jmeter.samplers.DummySampler
So download JMeterPlugins-Standard from here, unzip its contents to JMeter installation directory, restart JMeter.
From this side jpgc-dummy download 0.2.zip and just copy jmeter-plugins-cmn-jmeter-0.3 to your jmeter\lib directory.
来源：https://stackoverflow.com/questions/36611641/jmeter-error-in-non-gui-mode