Publish error - something with java

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When I use publish button I get this:

   Error using xslt (line 90)
    Java exception occurred:
    java.lang.OutOfMemoryError: Java heap space
  at java.lang.Integer.valueOf(Integer.java:832)
  at org.apache.fop.fonts.FontInfo.getFontInstance(FontInfo.java:307)
  at org.apache.fop.fonts.FontSelector.selectFontForCharacter(FontSelector.java:44)
  at org.apache.fop.fonts.FontSelector.selectFontForCharacterInText(FontSelector.java:84)
  at
    org.apache.fop.layoutmgr.inline.TextLayoutManager.getNextKnuthElements(TextLayoutManager.java:832)
  at
    org.apache.fop.layoutmgr.inline.InlineLayoutManager.getNextKnuthElements(InlineLayoutManager.java:329)
  at
    org.apache.fop.layoutmgr.inline.InlineLayoutManager.getNextKnuthElements(InlineLayoutManager.java:329)
  at
    org.apache.fop.layoutmgr.inline.LineLayoutManager.collectInlineKnuthElements(LineLayoutManager.java:708)
  at
    org.apache.fop.layoutmgr.inline.LineLayoutManager.getNextKnuthElements(LineLayoutManager.java:634)
  at org.apache.fop.layoutmgr.BlockLayoutManager.getNextChildElements(BlockLayoutManager.java:145)
  at
    org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:292)
  at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:115)
  at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:107)
  at org.apache.fop.layoutmgr.BlockLayoutManager.getNextChildElements(BlockLayoutManager.java:145)
  at
    org.apache.fop.layoutmgr.BlockStackingLayoutManager.getNextKnuthElements(BlockStackingLayoutManager.java:292)
  at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:115)
  at org.apache.fop.layoutmgr.BlockLayoutManager.getNextKnuthElements(BlockLayoutManager.java:107)
  at org.apache.fop.layoutmgr.FlowLayoutManager.getNextChildElements(FlowLayoutManager.java:223)
  at org.apache.fop.layoutmgr.FlowLayoutManager.addChildElements(FlowLayoutManager.java:147)
  at org.apache.fop.layoutmgr.FlowLayoutManager.getNextKnuthElements(FlowLayoutManager.java:116)
  at org.apache.fop.layoutmgr.FlowLayoutManager.getNextKnuthElements(FlowLayoutManager.java:69)
  at org.apache.fop.layoutmgr.PageBreaker.getNextKnuthElements(PageBreaker.java:251)
  at org.apache.fop.layoutmgr.AbstractBreaker.getNextBlockList(AbstractBreaker.java:770)
  at org.apache.fop.layoutmgr.PageBreaker.getNextBlockList(PageBreaker.java:178)
  at org.apache.fop.layoutmgr.PageBreaker.getNextBlockList(PageBreaker.java:158)
  at org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:389)
  at org.apache.fop.layoutmgr.PageBreaker.doLayout(PageBreaker.java:112)
  at
    org.apache.fop.layoutmgr.PageSequenceLayoutManager.activateLayout(PageSequenceLayoutManager.java:143)
  at org.apache.fop.area.AreaTreeHandler.endPageSequence(AreaTreeHandler.java:267)
  at org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:130)
  at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:360)
  at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:190)
Error in publish
Error in publish
Error in mdbpublish (line 55)
outputPath = publish(file, options);
Exception in thread "Explorer NavigationContext request queue" java.lang.OutOfMemoryError: Java heap space
  at java.lang.AbstractStringBuilder.<init>(AbstractStringBuilder.java:68)
  at java.lang.StringBuilder.<init>(StringBuilder.java:89)
  at com.mathworks.matlab.api.explorer.FileLocation.<init>(FileLocation.java:89)
  at com.mathworks.matlab.api.explorer.FileLocation.getParent(FileLocation.java:126)
  at com.mathworks.mlwidgets.explorer.model.vfs.VirtualFileSystem.resolveLocation(VirtualFileSystem.java:285)
  at com.mathworks.mlwidgets.explorer.model.vfs.VirtualFileSystem.getTarget(VirtualFileSystem.java:276)
  at com.mathworks.mlwidgets.explorer.model.vfs.VirtualFileSystem.isMountPoint(VirtualFileSystem.java:239)
  at com.mathworks.mlwidgets.explorer.model.vfs.VirtualFileSystem.toExternalEntry(VirtualFileSystem.java:324)
  at com.mathworks.mlwidgets.explorer.model.vfs.VirtualFileSystem.toExternalEntry(VirtualFileSystem.java:319)
  at com.mathworks.mlwidgets.explorer.model.vfs.VirtualFileList$MountingReceiver.receive(VirtualFileList.java:106)
  at com.mathworks.mlwidgets.explorer.model.vfs.VirtualFileList$MountingReceiver.receive(VirtualFileList.java:95)
  at com.mathworks.util.AsyncReceiverUtils$3.receive(AsyncReceiverUtils.java:77)
  at com.mathworks.mlwidgets.explorer.model.realfs.StatToEntryAdapter.receive(StatToEntryAdapter.java:37)
  at com.mathworks.cfbutils.NativeCfb.listFiles(Native Method)
  at com.mathworks.mlwidgets.explorer.model.realfs.RealFileList.readFilesAndFolders(RealFileList.java:47)
  at com.mathworks.mlwidgets.explorer.model.overlayfs.OverlayFileList.readFilesAndFolders(OverlayFileList.java:52)
  at com.mathworks.mlwidgets.explorer.model.vfs.VirtualFileList.readFilesAndFolders(VirtualFileList.java:57)
  at com.mathworks.mlwidgets.explorer.model.table.UiFileList.readAndUpdateCache(UiFileList.java:360)
  at com.mathworks.mlwidgets.explorer.model.table.UiFileList.access$500(UiFileList.java:45)
  at com.mathworks.mlwidgets.explorer.model.table.UiFileList$6.run(UiFileList.java:325)
  at com.mathworks.util.RequestQueue.execute(RequestQueue.java:129)
  at com.mathworks.util.RequestQueue.access$000(RequestQueue.java:25)
  at com.mathworks.util.RequestQueue$2.run(RequestQueue.java:79)
  at java.lang.Thread.run(Thread.java:748)
Error using open (line 52)
NAME must be a character vector or string scalar.

What should I do now?

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Walter Roberson am 22 Aug. 2018

You could try going into Preferences and increasing the Java Heap Memory allocation. You will need to exit MATLAB and reenter for that to take effect.