Linkage error on startup. IntelliJ Idea not starting up

Internal error. 

java.lang.LinkageError: loader constraint violation: loader (instance of com/intellij/util/lang/UrlClassLoader) previously initiated loading for a different type with name "org/apache/http/client/config/RequestConfig$Builder"
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
at java.lang.ClassLoader.defineClass(ClassLoader.java:642)
at com.intellij.util.lang.UrlClassLoader._defineClass(UrlClassLoader.java:295)
at com.intellij.util.lang.UrlClassLoader.defineClass(UrlClassLoader.java:291)
at com.intellij.util.lang.UrlClassLoader.findClass(UrlClassLoader.java:245)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at com.intellij.util.net.IdeHttpClientHelpers$ApacheHttpClient4.setProxyIfEnabled(IdeHttpClientHelpers.java:78)
at com.intellij.util.net.IdeHttpClientHelpers$ApacheHttpClient4.setProxyForUrlIfEnabled(IdeHttpClientHelpers.java:107)
at com.intellij.idea.plugin.hybris.statistics.impl.StatsRequest.call(StatsRequest.java:69)
at com.intellij.idea.plugin.hybris.statistics.impl.DefaultStatsCollector.flushingLoop(DefaultStatsCollector.java:115)
at java.lang.Thread.run(Thread.java:745)