[opencms-dev] "Could not initialize class sun.awt.X11GraphicsEnvironment" error on openCMS 8.5.1

[Joseph]

Hello,

I'are running OpenCMS wihout problem since one than a year. We restarted 
our server for maintenance issue but since then we cannot upload images 
using basic-upload or GWT-upload having the following error:

*Could not initialize class sun.awt.X11GraphicsEnvironment*


What is the reason of that ? how can we solve it ?
Please help,

full error details bellow.

Regards
Joseph


*java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11GraphicsEnvironment*
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:169)
	at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:68)
	at java.awt.image.BufferedImage.createGraphics(BufferedImage.java:1135)
	at com.alkacon.simapi.Simapi.ensureImageIsSystemType(Simapi.java:342)
	at com.alkacon.simapi.Simapi.read(Simapi.java:278)
	at com.alkacon.simapi.Simapi.read(Simapi.java:250)
	at org.opencms.loader.CmsImageScaler.<init>(CmsImageScaler.java:200)
	at org.opencms.file.types.CmsResourceTypeImage$CmsImageAdjuster.adjust(CmsResourceTypeImage.java:104)
	at org.opencms.file.types.CmsResourceTypeImage.createResource(CmsResourceTypeImage.java:292)
	at org.opencms.file.CmsObject.createResource(CmsObject.java:750)
	at org.opencms.workplace.explorer.CmsNewResourceUpload.actionUpload(CmsNewResourceUpload.java:784)
	at org.apache.jsp.WEB_002dINF.jsp.offline.system.workplace.commons.newresource_005fupload_jsp._jspService(newresource_005fupload_jsp.java:130)
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:371)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:308)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:259)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:659)
	at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:565)
	at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:493)
	at org.opencms.flex.CmsFlexRequestDispatcher.includeExternal(CmsFlexRequestDispatcher.java:188)
	at org.opencms.flex.CmsFlexRequestDispatcher.include(CmsFlexRequestDispatcher.java:163)
	at org.opencms.loader.CmsJspLoader.service(CmsJspLoader.java:618)
	at org.opencms.flex.CmsFlexRequestDispatcher.includeInternalWithCache(CmsFlexRequestDispatcher.java:417)
	at org.opencms.flex.CmsFlexRequestDispatcher.include(CmsFlexRequestDispatcher.java:167)
	at org.opencms.loader.CmsJspLoader.dispatchJsp(CmsJspLoader.java:903)
	at org.opencms.loader.CmsJspLoader.load(CmsJspLoader.java:523)
	at org.opencms.loader.CmsResourceManager.loadResource(CmsResourceManager.java:1183)
	at org.opencms.main.OpenCmsCore.showResource(OpenCmsCore.java:1669)
	at org.opencms.main.OpenCmsServlet.doGet(OpenCmsServlet.java:153)
	at org.opencms.main.OpenCmsServlet.doPost(OpenCmsServlet.java:166)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
	at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)
	at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
	at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:775)
	at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:704)
	at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:897)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
	at java.lang.Thread.run(Thread.java:662)


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