Console error when creating a new blog post and adding an image to use as Thumbnail at the same time

2017-07-05 17:55:41,332 [http://localhost:8080/xwiki/bin/upload/Blog/NewBlog6] ERROR c.x.x.w.Utils                  - Failed to process MultiPart request
com.xpn.xwiki.XWikiException: Error number 11008 in 11: Exception while parsing uploaded file
        at com.xpn.xwiki.plugin.fileupload.FileUploadPlugin.loadFileList(FileUploadPlugin.java:261)
        at com.xpn.xwiki.plugin.fileupload.FileUploadPlugin.loadFileList(FileUploadPlugin.java:181)
        at com.xpn.xwiki.web.Utils.handleMultipart(Utils.java:615)
        at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:378)
        at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:210)
        at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425)
        at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228)
        at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
        at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
        at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:808)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669)
        at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:112)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
        at org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:127)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
        at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:63)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
        at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
        at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
        at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:134)
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652)
        at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
        at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
        at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
        at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
        at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
        at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
        at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
        at org.eclipse.jetty.server.Server.handle(Server.java:499)
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
        at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
        at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
        at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
        at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
        at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.commons.fileupload.FileUploadException: Early EOF
        at org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:362)
        at com.xpn.xwiki.plugin.fileupload.FileUploadPlugin.loadFileList(FileUploadPlugin.java:251)
        ... 43 common frames omitted
Caused by: org.eclipse.jetty.io.EofException: Early EOF
        at org.eclipse.jetty.server.HttpInput$3.noContent(HttpInput.java:506)
        at org.eclipse.jetty.server.HttpInput.read(HttpInput.java:124)
        at java.io.FilterInputStream.read(Unknown Source)
        at org.apache.commons.fileupload.util.LimitedInputStream.read(LimitedInputStream.java:134)
        at org.apache.commons.fileupload.MultipartStream$ItemInputStream.makeAvailable(MultipartStream.java:999)
        at org.apache.commons.fileupload.MultipartStream$ItemInputStream.read(MultipartStream.java:903)
        at java.io.InputStream.read(Unknown Source)
        at org.apache.commons.fileupload.util.Streams.copy(Streams.java:100)
        at org.apache.commons.fileupload.util.Streams.copy(Streams.java:70)
        at org.apache.commons.fileupload.MultipartStream.readBodyData(MultipartStream.java:593)
        at org.apache.commons.fileupload.MultipartStream.discardBodyData(MultipartStream.java:617)
        at org.apache.commons.fileupload.MultipartStream.skipPreamble(MultipartStream.java:634)
        at org.apache.commons.fileupload.FileUploadBase$FileItemIteratorImpl.findNextItem(FileUploadBase.java:1023)
        at org.apache.commons.fileupload.FileUploadBase$FileItemIteratorImpl.<init>(FileUploadBase.java:1003)
        at org.apache.commons.fileupload.FileUploadBase.getItemIterator(FileUploadBase.java:310)
        at org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:334)
        ... 44 common frames omitted
2017-07-05 17:55:41,335 [http://localhost:8080/xwiki/bin/upload/Blog/NewBlog6] WARN  o.x.c.i.DefaultCSRFToken       - CSRFToken: Secret token verification failed, token: "null", stored token: "RvdckVM8Nj8w5GEmLFtpvA"